Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT

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FNUS55 KBYZ 220908
FWFBYZ

Fire Weather Planning Forecast for SCen and SErn Montana
National Weather Service Billings MT
308 AM MDT Tue May 22 2018

...Showers and thunderstorms with areas of heavy rain today and
Wednesday...

.DISCUSSION...
Expect a significant increase in shower/thunderstorm activity
today and Wednesday as a disturbance moves slowly through the
region. Lightning activity will be elevated beginning this
afternoon, and areas of very heavy rainfall are likely. Cannot
rule out a severe storm or two capable of producing large hail and
strong winds in the Sioux Ranger District late this afternoon and
evening. Looking ahead, drier and warmer conditions will return
for the end of the week. Some locations may see 90 degrees for the
first time this year by Saturday. JKL

MTZ123-222215-
Gallatin National Forest-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly cloudy. Scattered rain showers in
  the morning...then numerous rain showers and thunderstorms in the
  afternoon. Some thunderstorms may produce heavy rainfall in the
  afternoon.
* Max temperature.......63-71 at 5000 feet...51-61 at 7000 feet.
*   24 hr trend.........2 degrees warmer.
* Min humidity..........48-58 percent at 5000 feet...54-64 percent
  at 7000 feet.
*   24 hr trend.........2 percent wetter.
* Wind (20 ft)
*  Slope/valley.........North winds 5 to 10 mph.
*  Ridgetop.............East 5 to 10 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................40 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Mostly cloudy. Scattered rain showers and
  thunderstorms in the evening...then Numerous rain showers with
  isolated thunderstorms overnight. Some thunderstorms may produce
  heavy rainfall in the evening.
* Min temperature.......44-51 at 5000 feet...37-47 at 7000 feet.
*   24 hr trend.........Unchanged.
* Max humidity..........87-97 percent at 5000 feet...89-99 percent
  at 7000 feet.
*   24 hr trend.........2 percent wetter.
* Wind (20 ft)
*  Slope/valley.........East winds 5 to 10 mph.
*  Ridgetop.............East 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................30 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy with rain showers. Scattered
  thunderstorms...mainly in the afternoon.
* Max temperature.......58-65 at 5000 feet...48-58 at 7000 feet.
*   24 hr trend.........4 degrees cooler.
* Min humidity..........57-67 percent at 5000 feet...69-79 percent
  at 7000 feet.
*   24 hr trend.........11 percent wetter.
* Wind (20 ft)
*  Slope/valley.........South winds 5 to 10 mph.
*  Ridgetop.............Northeast 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................90 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Numerous showers with isolated
thunderstorms. Lows 45 to 51. South winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 45 to 52. Highs 67 to 77. Southwest winds 5 to 10 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 45 to 53. Highs 70 to 79. Southwest winds 5 to 10 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 44 to 53. Highs 73 to 80. Southeast winds 5 to 10 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms
likely. Lows 44 to 53. Highs 67 to 73.
.MONDAY...Mostly cloudy. Numerous showers and thunderstorms
likely. Highs 63 to 72.

$$

MTZ124-222215-
Wheatland County/Sweet Grass County-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly cloudy. Scattered rain showers in
  the morning...then rain showers and thunderstorms in the
  afternoon. Some thunderstorms may produce heavy rainfall in the
  afternoon.
* Max temperature.......66-71.
*   24 hr trend.........4 degrees cooler.
* Min humidity..........49-54 percent.
*   24 hr trend.........17 percent wetter.
* Wind (20 ft)
*  Plains...............Northwest winds 5 to 15 mph in the
   morning...becoming northeast in the afternoon.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................60 percent.
* Haines index..........2.

.TONIGHT...
* Sky/weather...........Cloudy with Numerous rain showers.
  Thunderstorms likely in the evening...then Isolated thunderstorms
  overnight. Some thunderstorms may produce heavy rainfall in the
  evening.
* Min temperature.......47-52.
*   24 hr trend.........1 degree warmer.
* Max humidity..........92-97 percent.
*   24 hr trend.........6 percent drier.
* Wind (20 ft)
*  Plains...............Northeast winds 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................60 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy with rain showers. Scattered
  thunderstorms...mainly in the afternoon.
* Max temperature.......63-68.
*   24 hr trend.........3 degrees cooler.
* Min humidity..........54-59 percent.
*   24 hr trend.........5 percent wetter.
* Wind (20 ft)
*  Plains...............North winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................90 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Numerous showers with isolated
thunderstorms. Lows 47 to 52. West winds 5 to 15 mph.
.THURSDAY...Warmer. Mostly cloudy. Scattered showers and
thunderstorms. Lows 47 to 52. Highs 75 to 80. West winds 5 to
15 mph.
.FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows
49 to 54. Highs 77 to 82. Southwest winds 5 to 10 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 50 to 55. Highs 79 to 84. South winds 5 to 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms
likely. Lows 51 to 56. Highs 71 to 76.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Highs 70 to 75.

$$

MTZ125-222215-
Stillwater County-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly cloudy. Scattered rain showers and
  thunderstorms in the afternoon. Some thunderstorms may produce
  heavy rainfall in the afternoon.
* Max temperature.......68-73.
*   24 hr trend.........2 degrees cooler.
* Min humidity..........44-49 percent.
*   24 hr trend.........8 percent wetter.
* Wind (20 ft)
*  Plains...............Northwest winds 5 to 10 mph in the
   morning...becoming east in the afternoon.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................40 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy with rain showers. Thunderstorms in
  the evening...then Isolated thunderstorms overnight. Some
  thunderstorms may produce heavy rainfall in the evening.
* Min temperature.......50-55.
*   24 hr trend.........2 degrees warmer.
* Max humidity..........92-97 percent.
*   24 hr trend.........5 percent wetter.
* Wind (20 ft)
*  Plains...............Northwest winds 5 to 10 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................80 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy with rain showers. Scattered
  thunderstorms...mainly in the afternoon.
* Max temperature.......63-68.
*   24 hr trend.........5 degrees cooler.
* Min humidity..........48-53 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Plains...............Northwest winds 5 to 10 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................90 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 50 to 55. Southwest winds 5 to 10 mph.
.THURSDAY...Warmer. Mostly cloudy. Scattered showers and
thunderstorms. Lows 50 to 55. Highs 75 to 80. West winds 5 to
15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
52 to 57. Highs 77 to 82. Southwest winds 5 to 10 mph.
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 52 to 57. Highs 80 to 85. South winds 5 to 10 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms
likely. Lows 51 to 56. Highs 71 to 76.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Highs 70 to 75.

$$

MTZ126-222215-
Beartooth Ranger District Custer National Forest-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly cloudy. Isolated rain showers in the
  morning...then numerous rain showers and thunderstorms in the
  afternoon. Some thunderstorms may produce heavy rainfall in the
  afternoon.
* Max temperature.......67-73 at 5000 feet...54-64 at 7000 feet.
*   24 hr trend.........2 degrees cooler.
* Min humidity..........44-54 percent at 5000 feet...54-64 percent
  at 7000 feet.
*   24 hr trend.........25 percent wetter.
* Wind (20 ft)
*  Slope/valley.........South winds 5 to 10 mph in the
   morning...becoming east in the afternoon.
*  Ridgetop.............South 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................50 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy with rain showers. Thunderstorms in
  the evening...then Isolated thunderstorms overnight. Some
  thunderstorms may produce heavy rainfall in the evening.
* Min temperature.......49-54 at 5000 feet...40-50 at 7000 feet.
*   24 hr trend.........2 degrees warmer.
* Max humidity..........90-95 percent.
*   24 hr trend.........6 percent wetter.
* Wind (20 ft)
*  Slope/valley.........Northeast winds 5 to 15 mph.
*  Ridgetop.............East 10 to 20 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................100 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy with rain showers. Scattered
  thunderstorms...mainly in the afternoon.
* Max temperature.......62-67 at 5000 feet...50-60 at 7000 feet.
*   24 hr trend.........3 degrees cooler.
* Min humidity..........51-61 percent at 5000 feet...61-71 percent
  at 7000 feet.
*   24 hr trend.........1 percent wetter.
* Wind (20 ft)
*  Slope/valley.........Northwest winds 5 to 10 mph.
*  Ridgetop.............North 5 to 10 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................90 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Numerous showers with isolated
thunderstorms. Lows 49 to 54. West winds 5 to 15 mph.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 50 to 55. Highs 69 to 78. West winds 5 to 10 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
51 to 57. Highs 72 to 80. Southwest winds 5 to 10 mph.
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 50 to 57. Highs 77 to 85. South winds 5 to 10 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms
likely. Lows 50 to 55. Highs 71 to 79.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Highs 66 to 73.

$$

MTZ127-222215-
Golden Valley County/Musselshell county-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly cloudy. Isolated rain showers in the
  morning...then scattered rain showers and thunderstorms in the
  afternoon. Some thunderstorms may produce heavy rainfall in the
  afternoon.
* Max temperature.......68-73.
*   24 hr trend.........3 degrees cooler.
* Min humidity..........50-55 percent.
*   24 hr trend.........6 percent wetter.
* Wind (20 ft)
*  Plains...............North winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................20 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Mostly cloudy. Scattered rain showers and
  thunderstorms in the evening...then Numerous rain showers with
  isolated thunderstorms overnight. Some thunderstorms may produce
  heavy rainfall in the evening.
* Min temperature.......53-58.
*   24 hr trend.........3 degrees warmer.
* Max humidity..........88-93 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Plains...............Northeast winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................60 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy with rain showers. Scattered
  thunderstorms...mainly in the afternoon.
* Max temperature.......63-68.
*   24 hr trend.........5 degrees cooler.
* Min humidity..........63-68 percent.
*   24 hr trend.........13 percent wetter.
* Wind (20 ft)
*  Plains...............North winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................90 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 53 to 58. West winds 5 to 15 mph.
.THURSDAY...Warmer. Partly cloudy. Isolated showers and
thunderstorms. Lows 54 to 59. Highs 75 to 80. West winds 5 to
15 mph.
.FRIDAY...Mostly clear. Lows 56 to 61. Highs 77 to 82. West winds
5 to 15 mph.
.SATURDAY...Mostly clear. Lows 56 to 61. Highs 79 to 84.
Southeast winds 5 to 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 55 to 60. Highs 73 to 78.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Highs 71 to 76.

$$

MTZ128-222215-
Yellowstone County-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Partly sunny. Scattered rain showers and
  thunderstorms in the afternoon. Some thunderstorms may produce
  heavy rainfall in the afternoon.
* Max temperature.......73-78.
*   24 hr trend.........5 degrees cooler.
* Min humidity..........41-46 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Plains...............Southwest winds 5 to 10 mph in the
   morning...becoming northeast 5 to 15 mph in the afternoon.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................10 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Mostly cloudy with Numerous rain showers.
  Thunderstorms likely in the evening...then Isolated thunderstorms
  overnight. Some thunderstorms may produce heavy rainfall in the
  evening.
* Min temperature.......53-58.
*   24 hr trend.........3 degrees warmer.
* Max humidity..........92-97 percent.
*   24 hr trend.........13 percent wetter.
* Wind (20 ft)
*  Plains...............Northeast winds 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................70 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy. Rain showers with isolated
  thunderstorms in the morning...then Numerous rain showers and
  Scattered thunderstorms in the afternoon.
* Max temperature.......66-71.
*   24 hr trend.........7 degrees cooler.
* Min humidity..........49-54 percent.
*   24 hr trend.........8 percent wetter.
* Wind (20 ft)
*  Plains...............Northwest winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................90 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 51 to 56. West winds 5 to 15 mph.
.THURSDAY...Warmer. Partly cloudy. Isolated showers and
thunderstorms. Lows 52 to 57. Highs 80 to 85. West winds 5 to
15 mph.
.FRIDAY...Mostly clear. Lows 53 to 58. Highs 82 to 87. Southwest
winds 5 to 10 mph.
.SATURDAY...Partly cloudy. Lows 53 to 58. Highs 84 to 89. South
winds 5 to 10 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 53 to 58. Highs 78 to 83.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 75 to 80.

$$

MTZ129-222215-
Crow Indian Reservation/Bighorn Canyon Rec Area-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Partly sunny. Scattered rain showers and
  thunderstorms in the afternoon. Some thunderstorms may produce
  heavy rainfall in the afternoon.
* Max temperature.......65-75 at 5000 feet...59-64 at 7000 feet.
*   24 hr trend.........Unchanged.
* Min humidity..........48-58 percent at 5000 feet...54-64 percent
  at 7000 feet.
*   24 hr trend.........3 percent wetter.
* Wind (20 ft)
*  Slope/valley.........Northwest winds 5 to 10 mph.
*  Ridgetop.............East 5 to 10 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................20 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy. Numerous rain showers and
  thunderstorms likely in the evening...then rain showers with
  isolated thunderstorms overnight. Some thunderstorms may produce
  heavy rainfall in the evening.
* Min temperature.......49-55 at 5000 feet...45-50 at 7000 feet.
*   24 hr trend.........3 degrees warmer.
* Max humidity..........91-96 percent.
*   24 hr trend.........7 percent wetter.
* Wind (20 ft)
*  Slope/valley.........East winds 10 to 20 mph.
*  Ridgetop.............East 15 to 30 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................100 percent.

.WEDNESDAY...
* Sky/weather...........Mostly cloudy with Numerous rain showers.
  Scattered thunderstorms...mainly in the afternoon.
* Max temperature.......59-69 at 5000 feet...54-60 at 7000 feet.
*   24 hr trend.........3 degrees cooler.
* Min humidity..........54-64 percent at 5000 feet...60-70 percent
  at 7000 feet.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Slope/valley.........West winds 5 to 15 mph.
*  Ridgetop.............South 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................70 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 49 to 55. West winds 5 to 15 mph.
.THURSDAY...Partly cloudy. Lows 49 to 58. Highs 70 to 80. West
winds 5 to 15 mph.
.FRIDAY...Mostly clear. Lows 51 to 59. Highs 72 to 82. West winds
5 to 15 mph.
.SATURDAY...Mostly clear. Lows 51 to 59. Highs 75 to 85.
Southeast winds 10 to 20 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 51 to 56. Highs 68 to 78.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 65 to 75.

$$

MTZ130-222215-
Northern Rosebud/Northern Treasure Counties-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Partly sunny with isolated rain showers.
  Isolated thunderstorms in the afternoon. Some thunderstorms may
  produce heavy rainfall in the afternoon.
* Max temperature.......77-82.
*   24 hr trend.........4 degrees warmer.
* Min humidity..........40-45 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Plains...............North winds 5 to 10 mph.
* LAL...................2...1 to 8 strikes/15 min/cell.
* CWR...................Less than 10 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Mostly cloudy. Scattered rain showers and
  thunderstorms in the evening...then Numerous rain showers with
  isolated thunderstorms overnight. Some thunderstorms may produce
  heavy rainfall in the evening.
* Min temperature.......57-62.
*   24 hr trend.........3 degrees warmer.
* Max humidity..........92-97 percent.
*   24 hr trend.........3 percent drier.
* Wind (20 ft)
*  Plains...............Northeast winds 5 to 10 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................50 percent.

.WEDNESDAY...
* Sky/weather...........Mostly cloudy. Rain showers with isolated
  thunderstorms in the morning...then Scattered rain showers and
  thunderstorms in the afternoon.
* Max temperature.......72-77.
*   24 hr trend.........5 degrees cooler.
* Min humidity..........55-60 percent.
*   24 hr trend.........15 percent wetter.
* Wind (20 ft)
*  Plains...............East winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................80 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 54 to 59. Southwest winds 5 to 15 mph.
.THURSDAY...Partly cloudy. Lows 55 to 60. Highs 82 to 87. West
winds 5 to 15 mph.
.FRIDAY...Mostly clear. Lows 57 to 62. Highs 83 to 88. West winds
5 to 15 mph.
.SATURDAY...Mostly clear. Lows 57 to 62. Highs 88 to 93.
Southeast winds 5 to 15 mph.
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 57 to 62. Highs 82 to 87.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 78 to 83.

$$

MTZ131-222215-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Partly sunny. Scattered rain showers with
  isolated thunderstorms in the afternoon.
* Max temperature.......76-81.
*   24 hr trend.........1 degree warmer.
* Min humidity..........38-43 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Slope/valley.........North winds 5 to 10 mph.
*  Ridgetop.............Light winds.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................10 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy with Numerous rain showers.
  Thunderstorms likely in the evening...then Scattered
  thunderstorms overnight. Some thunderstorms may be severe with
  heavy rainfall in the evening.
* Min temperature.......53-58.
*   24 hr trend.........3 degrees warmer.
* Max humidity..........93-98 percent.
*   24 hr trend.........8 percent wetter.
* Wind (20 ft)
*  Slope/valley.........Northeast winds 5 to 15 mph.
*  Ridgetop.............East 15 to 25 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................70 percent.

.WEDNESDAY...
* Sky/weather...........Mostly cloudy with Scattered rain showers.
  Scattered thunderstorms...mainly in the afternoon.
* Max temperature.......73-78.
*   24 hr trend.........3 degrees cooler.
* Min humidity..........38-43 percent.
*   24 hr trend.........Unchanged.
* Wind (20 ft)
*  Slope/valley.........South winds 5 to 15 mph.
*  Ridgetop.............South 10 to 20 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................40 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 51 to 56. Southwest winds 5 to 15 mph.
.THURSDAY...Partly cloudy. Lows 52 to 57. Highs 78 to 83. West
winds 5 to 10 mph.
.FRIDAY...Mostly clear. Lows 53 to 58. Highs 81 to 86. Northwest
winds 5 to 10 mph.
.SATURDAY...Mostly clear. Lows 53 to 58. Highs 85 to 90.
Southeast winds 5 to 10 mph.
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 53 to 58. Highs 81 to 86.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 75 to 80.

$$

MTZ132-222215-
Custer County-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly sunny with isolated rain showers.
  Isolated thunderstorms in the afternoon. Some thunderstorms may
  produce heavy rainfall in the afternoon.
* Max temperature.......76-81.
*   24 hr trend.........1 degree warmer.
* Min humidity..........35-40 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Plains...............Southeast winds 5 to 10 mph.
* LAL...................2...1 to 8 strikes/15 min/cell.
* CWR...................Less than 10 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Mostly cloudy with Numerous rain showers.
  Thunderstorms likely in the evening...then Scattered
  thunderstorms overnight. Some thunderstorms may produce heavy
  rainfall in the evening.
* Min temperature.......56-61.
*   24 hr trend.........6 degrees warmer.
* Max humidity..........91-96 percent.
*   24 hr trend.........6 percent wetter.
* Wind (20 ft)
*  Plains...............East winds 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................60 percent.

.WEDNESDAY...
* Sky/weather...........Cloudy with Numerous rain showers with
  isolated thunderstorms in the morning...then partly sunny with
  Scattered rain showers and thunderstorms in the afternoon.
* Max temperature.......74-79.
*   24 hr trend.........2 degrees cooler.
* Min humidity..........42-47 percent.
*   24 hr trend.........7 percent wetter.
* Wind (20 ft)
*  Plains...............Southeast winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................60 percent.
* Haines index..........3.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 53 to 58. Southwest winds 5 to 15 mph.
.THURSDAY...Partly cloudy. Lows 54 to 59. Highs 76 to 81. West
winds 5 to 15 mph.
.FRIDAY...Mostly clear. Lows 56 to 61. Highs 78 to 83. West winds
5 to 15 mph.
.SATURDAY...Mostly clear. Lows 57 to 62. Highs 83 to 88.
Southeast winds 5 to 15 mph.
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 58 to 63. Highs 81 to 86.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 75 to 80.

$$

MTZ133-222215-
Sioux Ranger District Custer National Forest-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly sunny. Numerous rain showers and
  thunderstorms in the afternoon. Some thunderstorms may be severe.
* Max temperature.......78-83.
*   24 hr trend.........5 degrees warmer.
* Min humidity..........34-39 percent.
*   24 hr trend.........1 percent drier.
* Wind (20 ft)
*  Plains...............Southeast winds 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................20 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy. Numerous rain showers and
  thunderstorms likely in the evening...then rain showers and
  Scattered thunderstorms overnight. Some thunderstorms may be
  severe in the evening.
* Min temperature.......54-59.
*   24 hr trend.........6 degrees warmer.
* Max humidity..........100 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  Plains...............East winds 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................80 percent.

.WEDNESDAY...
* Sky/weather...........Mostly cloudy in the morning...then
  becoming mostly sunny. Isolated thunderstorms. Numerous rain
  showers...mainly in the morning.
* Max temperature.......77-82.
*   24 hr trend.........1 degree cooler.
* Min humidity..........40-45 percent.
*   24 hr trend.........6 percent wetter.
* Wind (20 ft)
*  Plains...............Southeast winds 10 to 20 mph.
* LAL...................2...1 to 8 strikes/15 min/cell.
* CWR...................50 percent.
* Haines index..........3.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Scattered showers with isolated
thunderstorms. Lows 52 to 57. Southwest winds 5 to 15 mph.
.THURSDAY...Partly cloudy. Lows 53 to 58. Highs 77 to 82. West
winds 5 to 15 mph.
.FRIDAY...Mostly clear. Lows 55 to 60. Highs 81 to 86. Northwest
winds 5 to 15 mph.
.SATURDAY...Mostly clear. Lows 55 to 60. Highs 84 to 89. East
winds 5 to 15 mph.
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 55 to 60. Highs 81 to 86.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 74 to 79.

$$

WYZ274-222215-
Sheridan County-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Mostly sunny in the morning...then mostly
  cloudy with scattered rain showers and thunderstorms in the
  afternoon. Some thunderstorms may produce heavy rainfall in the
  afternoon.
* Max temperature.......73-78.
*   24 hr trend.........2 degrees warmer.
* Min humidity..........43-48 percent.
*   24 hr trend.........1 percent wetter.
* Wind (20 ft)
*  Slope/valley.........North winds 5 to 10 mph.
*  Ridgetop.............East 5 to 10 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................20 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy with rain showers. Thunderstorms in
  the evening...then Isolated thunderstorms overnight. Some
  thunderstorms may produce heavy rainfall in the evening.
* Min temperature.......50-55.
*   24 hr trend.........3 degrees warmer.
* Max humidity..........95-100 percent.
*   24 hr trend.........11 percent wetter.
* Wind (20 ft)
*  Slope/valley.........West winds 5 to 10 mph.
*  Ridgetop.............East 5 to 15 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................90 percent.

.WEDNESDAY...
* Sky/weather...........Mostly cloudy with Scattered rain showers.
  Scattered thunderstorms...mainly in the afternoon.
* Max temperature.......72-77.
*   24 hr trend.........1 degree cooler.
* Min humidity..........38-43 percent.
*   24 hr trend.........5 percent drier.
* Wind (20 ft)
*  Slope/valley.........South winds 5 to 10 mph.
*  Ridgetop.............Southwest 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................40 percent.
* Haines index..........3.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 48 to 53. Southwest winds 5 to 15 mph.
.THURSDAY...Mostly cloudy. Isolated showers and thunderstorms.
Lows 49 to 54. Highs 76 to 81. West winds 5 to 10 mph.
.FRIDAY...Mostly clear. Lows 50 to 55. Highs 79 to 84. Northwest
winds 5 to 10 mph.
.SATURDAY...Mostly clear. Lows 51 to 56. Highs 84 to 89.
Southeast winds 5 to 10 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 50 to 55. Highs 78 to 83.
.MONDAY...Partly sunny. Scattered showers and thunderstorms.
Highs 75 to 80.

$$

WYZ284-222215-
Bighorn National Forest-
308 AM MDT Tue May 22 2018

.Today...
* Sky/weather...........Partly sunny. Numerous rain showers and
  thunderstorms in the afternoon. Some thunderstorms may produce
  heavy rainfall in the afternoon.
* Max temperature.......58-63.
*   24 hr trend.........Unchanged.
* Min humidity..........46-51 percent.
*   24 hr trend.........4 percent wetter.
* Wind (20 ft)
*  At Burgess Jct.......South winds 5 to 10 mph in the
   morning...becoming east in the afternoon.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................30 percent.
* Haines index..........3.

.TONIGHT...
* Sky/weather...........Cloudy with rain showers. Thunderstorms in
  the evening...then Isolated thunderstorms overnight. Some
  thunderstorms may produce heavy rainfall in the evening.
* Min temperature.......39-44.
*   24 hr trend.........6 degrees warmer.
* Max humidity..........91-96 percent.
*   24 hr trend.........7 percent drier.
* Wind (20 ft)
*  At Burgess Jct.......Southeast winds 5 to 10 mph.
* LAL...................4...16 to 25 strikes/15 min/cell.
* CWR...................100 percent.

.WEDNESDAY...
* Sky/weather...........Mostly cloudy with Numerous rain showers.
  Scattered thunderstorms...mainly in the afternoon.
* Max temperature.......55-60.
*   24 hr trend.........3 degrees cooler.
* Min humidity..........43-48 percent.
*   24 hr trend.........3 percent drier.
* Wind (20 ft)
*  At Burgess Jct.......Southwest winds 5 to 15 mph.
* LAL...................3...9 to 15 strikes/15 min/cell.
* CWR...................60 percent.
* Haines index..........2.


.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Scattered showers with isolated
thunderstorms. Lows 38 to 43. Southwest winds 5 to 15 mph.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 38 to 43. Highs 61 to 66. Southwest winds 5 to 15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
40 to 45. Highs 63 to 68. West winds 5 to 10 mph.
.SATURDAY...Mostly clear. Lows 42 to 47. Highs 69 to 74. South
winds 5 to 10 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms
likely. Lows 42 to 47. Highs 63 to 68.
.MONDAY...Partly sunny. Numerous showers and thunderstorms
likely. Highs 60 to 65.

$$

weather.gov/billings


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