Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
629
FNUS56 KPDT 081924
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
1224 PM PDT Tue Sep 8 2026
.DISCUSSION...Warming and dry today into Thursday. Fair overnight
RH recoveries Wednesday night into Thursday morning will hover in
the 40-50% range for portions of Central and Eastern Oregon.
Breezy winds Thursday associated with a passing system, with a
stronger system over the weekend bringing the potential for
afternoon thunderstorms.
***Winds are 20 foot 10 minute averages ***
***CWR: Chance of wetting rain 0.10 or greater ***
***Ventilation Index is derived from transport wind
multiplied by the mixing height in 100`s of ft.
Categories are a generalized indicator and users
are encourage to develop criteria that are
suitable and representative of dispersion
conditions in their local area of interest.
Categories: low (< 200), moderate (200-500),
high (500-700), and very high (> 700).
-Note: Max transport winds may not occur
at the same time as max mixing height. ***
WAZ695-091115-
East Washington South Central Cascade Mountains-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-51.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (43-77) decreasing to low (25) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....74-82...except 67-74 ridges.
* Min humidity........27-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (25-29) increasing to low to moderate
(174-226) in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....48-55.
* Max humidity........63-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (77-123) decreasing to low (29-53) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....64-72...except 55-64 ridges.
* Min humidity........45-60 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 5 to 11 mph.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West around 15 mph.
* Ventilation Index...Low (55-85) increasing to moderate to high
(376-538) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Partly cloudy. Lows 37 to 45. Highs 52 to 64. West
winds 5 to 11 mph.
.SATURDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 40 to 46. Highs 50 to 63. North
winds 1 to 6 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 38 to 45.
Highs 52 to 65. Northwest winds 1 to 6 mph.
.MONDAY...Mostly clear. Lows 38 to 44. Highs 57 to 69. West winds
up to 5 mph.
.TUESDAY...Mostly clear. Lows 41 to 47. Highs 58 to 71. Terrain
driven winds less than 5 mph.
$$
WAZ690-091115-
Kittitas Valley-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........61-76 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....South around 5 mph shifting to the northwest
after midnight.
* Ventilation Index...Low (63-107) decreasing to low (25-26) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-83...except 69-77 ridges.
* Min humidity........26-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 1 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (25-31) increasing to low to moderate
(172-268) in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....55-60.
* Max humidity........55-70 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest 3 to 8 mph after midnight.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (65-153) decreasing to low (39-55) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....73-81...except 64-74 ridges.
* Min humidity........30-43 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 6 to 12 mph.
* Ridges/upr slopes....Northwest winds 6 to 12 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Northwest around 15 mph.
* Ventilation Index...Low (45-97) increasing to moderate to high
(464-626) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Mostly clear. Lows 45 to 50. Highs 65 to 73. Northwest
winds 7 to 13 mph.
.SATURDAY...Mostly cloudy with a chance of showers. Lows 48 to
53. Highs 63 to 71. North winds 6 to 12 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 46 to 51.
Highs 65 to 73. Northwest winds 2 to 7 mph.
.MONDAY...Mostly clear. Lows 45 to 50. Highs 66 to 74. Southeast
winds up to 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 52. Highs 68 to 76. Terrain
driven winds less than 5 mph.
$$
WAZ694-091115-
Yakama Alpine District-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-52.
* Max humidity........57-72 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Low (45-67) decreasing to low (25-26) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-84...except 69-79 ridges.
* Min humidity........26-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25-29) increasing to low to moderate
(127-215) in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....48-56.
* Max humidity........59-74 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (75-109) decreasing to low (29-47) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....71-79...except 60-73 ridges.
* Min humidity........35-50 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 10 mph.
* Ridges/upr slopes....West winds 4 to 10 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (26-52) increasing to moderate to high
(422-530) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Partly cloudy. Lows 38 to 46. Highs 57 to 69. West
winds 4 to 10 mph.
.SATURDAY...Mostly cloudy with a chance of showers. Lows 40 to
48. Highs 53 to 66. Northwest winds 2 to 7 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 39 to 47.
Highs 56 to 69. West winds 2 to 6 mph.
.MONDAY...Mostly clear. Lows 40 to 47. Highs 59 to 71. Southwest
winds 1 to 5 mph.
.TUESDAY...Mostly clear. Lows 42 to 49. Highs 61 to 73. Terrain
driven winds less than 5 mph.
$$
ORZ691-WAZ691-091115-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........64-79 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Low (56-106) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 76-81 ridges.
* Min humidity........24-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25-34) increasing to low to moderate
(101-201) in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....53-58.
* Max humidity........58-73 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 2 to 7 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (48-96) decreasing to low (28-42) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....79-85...except 74-81 ridges.
* Min humidity........30-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 7 mph shifting to the
west 7 to 13 mph with gusts up to 25 mph in the afternoon.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (27-65) increasing to moderate to very
high (435-721) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Not as warm. Mostly clear. Lows 47 to 52. Highs 68 to
75. West winds 8 to 14 mph.
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 47 to
52. Highs 65 to 73. Northwest winds 2 to 7 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 45 to 50.
Highs 66 to 74. West winds 4 to 9 mph.
.MONDAY...Mostly clear. Lows 45 to 50. Highs 69 to 76. Southwest
winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 47 to 52. Highs 71 to 78. West
winds up to 5 mph.
$$
ORZ692-WAZ692-091115-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Clear.
* Min temperature.....43-51.
* Max humidity........63-76 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Low (52-80) decreasing to low (26-36) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-83...except 68-75 ridges.
* Min humidity........25-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (32-56) increasing to moderate (265-405)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....48-57.
* Max humidity........47-62 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south 1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southwest 2 to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (39-97) decreasing to low (33-49) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....73-82...except 66-73 ridges.
* Min humidity........29-38 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 4 to 10 mph.
* Ridges/upr slopes....Southwest winds 4 to 10 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Southwest around 10 mph increasing to west
around 20 mph in the afternoon.
* Ventilation Index...Low (25-102) increasing to very high
(704-792) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. A slight chance of showers. Partly cloudy. Lows
42 to 49. Highs 59 to 69. West winds 5 to 11 mph.
.SATURDAY...A chance of showers. Partly cloudy. Lows 40 to 48.
Highs 56 to 66. West winds up to 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows 39 to 45. Highs
53 to 64. West winds 1 to 6 mph.
.MONDAY...Mostly clear. Lows 37 to 45. Highs 60 to 70. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 40 to 48. Highs 62 to 72. Terrain
driven winds less than 5 mph.
$$
ORZ693-WAZ693-091115-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....40-49.
* Max humidity........69-84 percent...except 62-73 percent ridges.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming south 1
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (47-75) decreasing to low (25) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-84...except 69-75 ridges.
* Min humidity........20-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (25-42) increasing to moderate (310-450)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-55...except 51-56 ridges.
* Max humidity........53-68 percent...except 42-54 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 4 to 9 mph.
* Ridges/upr slopes....South winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest around 10 mph.
* Ventilation Index...Low (64-122) decreasing to low (27-49) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-84...except 71-77 ridges.
* Min humidity........21-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 4 to 9 mph.
* Ridges/upr slopes....Southwest winds 4 to 10 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Southwest 10 to 15 mph.
* Ventilation Index...Low (25-52) increasing to high to very high
(679-861) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. A chance of showers. Partly cloudy. Lows 41 to
50. Highs 63 to 73. West winds 4 to 9 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 38 to
48. Highs 60 to 70. Northeast winds 1 to 6 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows 37 to 46. Highs
55 to 64. West winds 4 to 9 mph.
.MONDAY...A slight chance of showers. Mostly clear. Lows 34 to
44. Highs 62 to 71. Terrain driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 36 to 47. Highs 65 to 74. Terrain
driven winds less than 5 mph.
$$
ORZ701-091115-
Eastern Columbia River Gorge of Oregon-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........62-74 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Low (72-94) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86.
* Min humidity........28-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......3500 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Low (25-33) increasing to low (25-110) in the
afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-57.
* Max humidity........59-74 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Winds west 2 to 6 mph after midnight.
Drainage winds less than 5 mph. In the eastern Columbia River
Gorge, winds west 3 to 8 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (69-93) decreasing to low (30-48) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....78-83...except 73-80 ridges.
* Min humidity........39-54 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph increasing to 7 to 13
mph with gusts up to 25 mph in the afternoon. In the eastern
Columbia River Gorge, west winds 4 to 9 mph increasing to 10
to 16 mph with gusts up to 30 mph in the afternoon.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (28-60) increasing to moderate to high
(459-629) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Partly cloudy. Lows 44 to 50. Highs 67 to 72. West
winds 6 to 12 mph.
.SATURDAY...A chance of showers. Mostly cloudy. Lows 44 to 50.
Highs 64 to 70. West winds 1 to 6 mph.
.SUNDAY...A slight chance of showers. Partly cloudy. Lows 43 to
50. Highs 67 to 72. West winds 3 to 8 mph.
.MONDAY...Mostly clear. Lows 44 to 50. Highs 70 to 75. East winds
1 to 6 mph.
.TUESDAY...Mostly clear. Lows 46 to 52. Highs 72 to 77. Terrain
driven winds less than 5 mph.
$$
ORZ702-091115-
East Slopes of the Mt. Hood National Forest-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....47-53.
* Max humidity........54-69 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Low (68-86) decreasing to low (25-33) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 74-80 ridges.
* Min humidity........28-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (26-40) increasing to low (102-170) in
the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-56.
* Max humidity........53-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west up
to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (80-100) decreasing to low (37-51) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
* Max temperature.....72-81...except 66-75 ridges.
* Min humidity........36-46 percent...except 42-57 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (36-54) increasing to moderate (377-489)
in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Partly cloudy. Lows 37 to 44. Highs 56 to 70. West
winds 2 to 7 mph.
.SATURDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 39 to 46. Highs 51 to 66.
Terrain driven winds less than 5 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 38 to 45.
Highs 54 to 68. West winds 1 to 5 mph.
.MONDAY...Mostly clear. Lows 40 to 46. Highs 60 to 71. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 43 to 49. Highs 61 to 73. Terrain
driven winds less than 5 mph.
$$
ORZ695-091115-
Eagle Cap Wilderness-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-49...except 39-45 ridges.
* Max humidity........60-75 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph shifting to the
southwest 2 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the south
after midnight.
* Ventilation Index...Low (25-58) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....71-80...except 61-70 ridges.
* Min humidity........25-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (27-51) increasing to moderate (267-383)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-52.
* Max humidity........48-61 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 3 to 8 mph.
* Ridges/upr slopes....South winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....South around 10 mph.
* Ventilation Index...Low (52-92) decreasing to low (26-50) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-81...except 61-72 ridges.
* Min humidity........26-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 3 to 8 mph.
* Ridges/upr slopes....Southwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....Southwest 10 to 15 mph.
* Ventilation Index...Low (25-60) increasing to moderate to very
high (462-756) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. A chance of showers. Mostly clear. Lows 38 to
46. Highs 55 to 68. West winds 4 to 9 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 37 to
45. Highs 51 to 66. South winds 2 to 7 mph.
.SUNDAY...Mostly cloudy with showers likely with possible snow
showers and thunderstorms. Lows 34 to 42. Highs 45 to 60.
Northwest winds 5 to 11 mph.
.MONDAY...Mostly clear. Lows 32 to 41. Highs 51 to 65. South
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 35 to 44. Highs 55 to 69. Southwest
winds 1 to 5 mph.
$$
ORZ694-091115-
Grande Ronde Valley of Oregon-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Clear.
* Min temperature.....42-47.
* Max humidity........70-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North around 5 mph shifting to the southeast
after midnight.
* Ventilation Index...Low (34-62) decreasing to low (25) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-84.
* Min humidity........24-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds up to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....South winds 2 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (27-39) increasing to moderate (297-363)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-51.
* Max humidity........60-72 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 3 to 8 mph.
* Ridges/upr slopes....South winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....South around 10 mph.
* Ventilation Index...Low (86-106) decreasing to low (34-58) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-85.
* Min humidity........24-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 3 to 8 mph.
* Ridges/upr slopes....Southwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Southwest around 10 mph.
* Ventilation Index...Low (25-42) increasing to moderate to high
(425-655) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Not as warm. A chance of showers. Partly cloudy. Lows
44 to 49. Highs 68 to 73. Northwest winds 4 to 9 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 40 to
45. Highs 65 to 70. Northwest winds 4 to 9 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows 39 to 44. Highs
60 to 65. Northwest winds 7 to 13 mph.
.MONDAY...Mostly clear. Lows 36 to 41. Highs 65 to 71. South
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 39 to 44. Highs 69 to 74. Terrain
driven winds less than 5 mph.
$$
ORZ699-091115-
Western Forested Blue Mountains-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Clear.
* Min temperature.....42-47.
* Max humidity........58-72 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (42-94) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-83...except 71-77 ridges.
* Min humidity........18-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (28-48) increasing to moderate (324-452)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-52.
* Max humidity........45-58 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming south 1
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (54-102) decreasing to low (25-36) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-80...except 69-75 ridges.
* Min humidity........19-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7
mph in the afternoon.
* Ridges/upr slopes....Southwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (25-36) increasing to high to very high
(544-716) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. A slight chance of showers. Mostly clear. Lows
40 to 46. Highs 59 to 68. West winds 2 to 7 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 38 to
43. Highs 55 to 63. Northwest winds 1 to 6 mph.
.SUNDAY...Showers likely. Mostly cloudy. Lows 35 to 41. Highs
52 to 61. Northwest winds 4 to 10 mph.
.MONDAY...Mostly clear. Lows 34 to 40. Highs 59 to 67. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 38 to 44. Highs 61 to 70. Terrain
driven winds less than 5 mph.
$$
ORZ696-091115-
John Day Valley-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-50.
* Max humidity........55-64 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southeast up to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southeast 1 to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (72-114) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-87...except 75-80 ridges.
* Min humidity........16-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (27-39) increasing to moderate (266-420)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........46-56 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south 1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming south 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (68-114) decreasing to low (25-28) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-84...except 71-76 ridges.
* Min humidity........19-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7
mph in the afternoon.
* Ridges/upr slopes....South winds 2 to 5 mph shifting to the west
2 to 7 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Southwest around 5 mph increasing to west
around 15 mph in the afternoon.
* Ventilation Index...Low (25-27) increasing to moderate to high
(423-545) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. Mostly clear. Lows 45 to 50. Highs 65 to 74.
West winds 3 to 8 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 41 to
47. Highs 59 to 68. Northwest winds 2 to 7 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 38 to 45.
Highs 58 to 67. West winds 5 to 11 mph.
.MONDAY...Mostly clear. Lows 38 to 44. Highs 64 to 72. Southeast
winds up to 5 mph.
.TUESDAY...Mostly clear. Lows 41 to 47. Highs 66 to 75. Terrain
driven winds less than 5 mph.
$$
ORZ700-091115-
Central Mountains of Oregon-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....40-49.
* Max humidity........56-71 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph shifting to the
southeast after midnight.
* Ventilation Index...Low (92-134) decreasing to low (25-29) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 74-79 ridges.
* Min humidity........15-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Low (27-45) increasing to moderate (212-416)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-52.
* Max humidity........49-62 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
south up to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
southwest up to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (84-164) decreasing to low (25-28) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-83...except 71-77 ridges.
* Min humidity........16-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Southwest around 5 mph increasing to west
around 15 mph in the afternoon.
* Ventilation Index...Low (25-29) increasing to moderate to high
(387-583) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. Mostly clear. Lows 41 to 47. Highs 66 to 73.
West winds 4 to 10 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 37 to
44. Highs 59 to 65. Northwest winds 4 to 9 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 32 to 42.
Highs 58 to 66. West winds 5 to 11 mph.
.MONDAY...Mostly clear. Lows 34 to 42. Highs 63 to 70. Southeast
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 37 to 45. Highs 67 to 73. Terrain
driven winds less than 5 mph.
$$
ORZ703-091115-
Warm Springs Reservation-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....48-53.
* Max humidity........61-69 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Low (86-118) decreasing to low (25-26) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-87...except 73-80 ridges.
* Min humidity........25-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-30) increasing to low (115-199) in
the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........57-67 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (83-115) decreasing to low (25-43) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-84...except 65-73 ridges.
* Min humidity........30-39 percent...except 37-50 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (25-45) increasing to moderate to high
(412-546) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Mostly clear. Lows 41 to 47. Highs 63 to 74. West winds
5 to 11 mph.
.SATURDAY...A chance of showers and a slight chance of
thunderstorms. Partly cloudy. Lows 41 to 47. Highs 55 to 67.
Northwest winds 3 to 8 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 40 to 45.
Highs 58 to 70. West winds 4 to 9 mph.
.MONDAY...Mostly clear. Lows 41 to 46. Highs 63 to 72. Southeast
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 44 to 49. Highs 65 to 75. Northwest
winds up to 5 mph.
$$
ORZ704-091115-
Northern Deschutes National Forest-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....42-49.
* Max humidity........57-70 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 10 mph shifting to the south
after midnight.
* Ventilation Index...Low (94-114) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-89...except 72-80 ridges.
* Min humidity........20-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (25-34) increasing to moderate (201-281)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-51.
* Max humidity........56-63 percent...except 41-56 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (110-134) decreasing to low (26-42) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-82...except 65-74 ridges.
* Min humidity........26-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7
mph in the afternoon.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (25-41) increasing to moderate to high
(450-524) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Mostly clear. Lows 40 to 45. Highs 61 to 72. West winds
4 to 10 mph.
.SATURDAY...Cooler. A chance of showers and a slight chance of
thunderstorms. Partly cloudy. Lows 36 to 43. Highs 49 to 62. West
winds 1 to 6 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 34 to 41.
Highs 54 to 65. West winds 3 to 8 mph.
.MONDAY...Mostly clear. Lows 35 to 42. Highs 60 to 70. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 38 to 45. Highs 61 to 71. Terrain
driven winds less than 5 mph.
$$
ORZ705-091115-
Southern Deschutes National Forest-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....38-45...except 43-49 ridges.
* Max humidity........61-76 percent...except 50-64 percent ridges.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds up to 5 mph shifting to the
southeast after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Low (118-164) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 72-80 ridges.
* Min humidity........15-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (25-40) increasing to moderate (322-398)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....40-48...except 46-51 ridges.
* Max humidity........53-68 percent...except 39-54 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest up to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (132-188) decreasing to low (25-31) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-81...except 66-74 ridges.
* Min humidity........15-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Low (25-39) increasing to moderate to high
(489-669) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Mostly clear. Lows 37 to 42. Highs 63 to 73. West winds
2 to 7 mph.
.SATURDAY...Cooler. A chance of showers. Partly cloudy. Lows
32 to 38. Highs 51 to 61. West winds 1 to 6 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 29 to 36.
Highs 55 to 63. West winds 2 to 7 mph.
.MONDAY...Mostly clear. Lows 30 to 37. Highs 61 to 68. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 33 to 41. Highs 63 to 71. Terrain
driven winds less than 5 mph.
$$
ORZ697-091115-
Central Blue Mountains-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....41-46.
* Max humidity........58-64 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Low (45-89) decreasing to low (25-28) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-81...except 71-78 ridges.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (31-45) increasing to moderate (399-481)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-50.
* Max humidity........46-52 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Low (103-143) decreasing to low (25-30) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-81...except 70-76 ridges.
* Min humidity........16-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7
mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming west 2 to 7
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West around 5 mph increasing to around 15 mph
in the afternoon.
* Ventilation Index...Low (25-27) increasing to high to very high
(597-723) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. Mostly clear. Lows 41 to 46. Highs 62 to 68.
West winds 2 to 7 mph.
.SATURDAY...Partly cloudy with a chance of showers. Lows 38 to
43. Highs 56 to 62. West winds 3 to 8 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 34 to 39.
Highs 52 to 59. Northwest winds 5 to 11 mph.
.MONDAY...Mostly clear. Lows 33 to 38. Highs 57 to 64. Southeast
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 36 to 41. Highs 61 to 68. Terrain
driven winds less than 5 mph.
$$
ORZ698-091115-
Southern Blue Mountains-
1224 PM PDT Tue Sep 8 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....41-46.
* Max humidity........55-62 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Low (68-112) decreasing to low (25-35) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-81...except 71-76 ridges.
* Min humidity........15-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Low (27-41) increasing to moderate (262-410)
in the afternoon.
.WEDNESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-50.
* Max humidity........45-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (83-131) decreasing to low (25-28) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-82.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 3 to 7
mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming west 3 to 7
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....West around 5 mph increasing to around 15 mph
in the afternoon.
* Ventilation Index...Low (25-28) increasing to high to very high
(639-727) in the afternoon.
.Forecast days 3 through 7......
.FRIDAY...Cooler. Mostly clear. Lows 42 to 48. Highs 66 to 71.
West winds 4 to 9 mph.
.SATURDAY...Partly cloudy with a slight chance of showers. Lows
39 to 45. Highs 59 to 66. Northwest winds 6 to 12 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 34 to 40.
Highs 56 to 61. Northwest winds 8 to 14 mph.
.MONDAY...Mostly clear. Lows 34 to 39. Highs 60 to 65. East winds
1 to 6 mph.
.TUESDAY...Mostly clear. Lows 37 to 42. Highs 65 to 70. Terrain
driven winds less than 5 mph.
$$
.8-14 DAY OUTLOOK for Wednesday September 16 through Tuesday September 22...
A greater chance of above-normal temperatures and near-normal
precipitation.
$$