Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
507 FNUS55 KPSR 130748 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 1248 AM MST Sun Sep 13 2026 .DISCUSSION... Chances for scattered showers and isolated storms will continue today before increasing and becoming more widespread into the south-central Arizona lower deserts beginning Monday. Moisture levels will remain high enough to support localized heavy rainfall with any storms. Minimum humidity levels over the next several days will only fall into a 15-25% range in western districts and 25-40% in eastern districts. This will follow fair to good overnight recovery of 40-70%. Outside of thunderstorms, winds will generally remain light with a southwest heading through nearly calm conditions will be common in the morning hours. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-132000- West Central Deserts/Northwest Maricopa County/Greater Phoenix Area/Southwest Deserts/Southwest Maricopa County/ Northwest and North-Central Pinal County- Phoenix BLM/YUM BLM/CAZ-CRZ- 1248 AM MST Sun Sep 13 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................97-104. * 24 hr trend..................Little change. * Min Humidity....................27-32 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Phoenix.......8800 ft AGL. * Transport Wind for Phoenix......Southwest 7 knots. * Dispersion for Phoenix..........Good. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms after midnight. * Min Temperature.................78-88. * 24 hr trend..................Little change. * Max Humidity....................51-62 pct. * 24 hr trend..................4 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. .MONDAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms. * Max Temperature.................98-105. * 24 hr trend..................Little change. * Min Humidity....................24-29 pct. * 24 hr trend..................3 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. * Mixing Height for Phoenix.......11800 ft AGL. * Transport Wind for Phoenix......Southwest 11 knots. * Dispersion for Phoenix..........Excellent. .EXTENDED... .TUESDAY...Mostly clear. Lows 74-84. Highs 96-103. South winds 10 to 20 mph. .WEDNESDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 74-84. Highs 95-104. Southeast winds 5 to 15 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-85. Highs 97-104. Southeast winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 77-87. Highs 100-107. .SATURDAY...Mostly clear. Lows 77-87. Highs 100-108. $$ AZZ131-CAZ231-132000- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 1248 AM MST Sun Sep 13 2026 /1248 AM PDT Sun Sep 13 2026/ .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................101-106. * 24 hr trend..................Little change. * Min Humidity....................28-33 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Yuma..........8000 ft AGL. * Transport Wind for Yuma.........South 11 knots. * Dispersion for Yuma.............Very good. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................79-84. * 24 hr trend..................Little change. * Max Humidity....................51-70 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .MONDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................101-106. * 24 hr trend..................Little change. * Min Humidity....................24-29 pct. * 24 hr trend..................5 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Yuma..........7200 ft AGL. * Transport Wind for Yuma.........South 12 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .TUESDAY...Clear. Lows 75-82. Highs 99-104. South winds 10 to 20 mph. .WEDNESDAY...Clear. Lows 74-79. Highs 100-105. South winds 10 to 20 mph. .THURSDAY...Mostly clear. Lows 75-82. Highs 101-106. South winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 77-84. Highs 103-108. .SATURDAY...Mostly clear. Lows 77-84. Highs 104-109. $$ AZZ133-132000- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 1248 AM MST Sun Sep 13 2026 .TODAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms . * Max Temperature.................84-98. * 24 hr trend..................Little change. * Min Humidity....................29-40 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the morning becoming southwest in the afternoon. * Winds...10000 FT MSL............Southwest 10 to 15 mph. * Chance of Precip................10 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............14 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms . * Min Temperature.................63-80. * 24 hr trend..................Little change. * Max Humidity....................58-84 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the evening becoming mostly downslope/downvalley after midnight. * Winds...10000 FT MSL............Southwest 15 to 25 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............24 percent. .MONDAY... * Sky/weather.....................Partly sunny. Chance of showers and slight chance of thunderstorms. * Max Temperature.................82-97. * 24 hr trend..................Little change. * Min Humidity....................29-43 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. * Winds...10000 FT MSL............Southwest 15 to 25 mph. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............24 percent. .EXTENDED... .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 61-79. Highs 81-95. Southeast winds 5 to 15 mph. .WEDNESDAY...Partly cloudy with chance of showers and thunderstorms. Lows 60-77. Highs 79-95. Southeast winds 5 to 10 mph. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 60-77. Highs 80-97. East winds 5 to 10 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 60-77. Highs 83-100. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 60-78. Highs 83-100. $$ CAZ232-132000- Imperial County And Eastern Riverside County- 1248 AM PDT Sun Sep 13 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................96-107. * 24 hr trend..................Little change. * Min Humidity....................15-28 pct. * 24 hr trend..................10 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................75-82. * 24 hr trend..................3 degrees cooler. * Max Humidity....................27-58 pct. * 24 hr trend..................15 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .MONDAY... * Sky/weather.....................Sunny. * Max Temperature.................96-105. * 24 hr trend..................Little change. * Min Humidity....................10-22 pct. * 24 hr trend..................5 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .TUESDAY...Clear. Lows 72-80. Highs 94-104. South winds 5 to 15 mph. .WEDNESDAY...Clear. Lows 72-79. Highs 95-105. South winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 73-81. Highs 95-105. South winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 75-84. Highs 98-107. .SATURDAY...Clear. Lows 77-84. Highs 99-109. $$ CAZ230-132000- Joshua Tree National Park- 1248 AM PDT Sun Sep 13 2026 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................86-99. * 24 hr trend..................Little change. * Min Humidity....................18-26 pct. * 24 hr trend..................8 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................66-76. * 24 hr trend..................4 degrees cooler. * Max Humidity....................34-41 pct. * 24 hr trend..................17 pct drier. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .MONDAY... * Sky/weather.....................Sunny. * Max Temperature.................85-98. * 24 hr trend..................Little change. * Min Humidity....................13-18 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .TUESDAY...Clear. Lows 64-75. Highs 82-97. Southwest winds 10 to 20 mph. .WEDNESDAY...Clear. Lows 64-74. Highs 82-97. Southwest winds 5 to 15 mph. .THURSDAY...Clear. Lows 64-76. Highs 84-98. Southwest winds 5 to 15 mph. .FRIDAY...Clear. Lows 66-77. Highs 87-100. .SATURDAY...Clear. Lows 68-79. Highs 88-101. $$ .8 TO 10 DAY OUTLOOK...Sunday September 20th through Tuesday September 22nd: Above normal temperatures and near to above median precipitation.