Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
381 FNUS55 KPSR 201032 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 332 AM MST Sun Sep 20 2026 .DISCUSSION... Temperatures will remain a few degrees above normal with dry conditions through Monday. MinRH values will be around 10-25% today and rise to around 15-30% tomorrow with fair to good overnight recoveries of 35-70%. Winds should retain their typical upslope/drainage component with very limited afternoon gusts. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-202245- 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- 332 AM MST Sun Sep 20 2026 .TODAY... * Sky/weather.....................Partly sunny. * Max Temperature.................95-102. * 24 hr trend..................Little change. * Min Humidity....................17-23 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. * Mixing Height for Phoenix.......9900 ft AGL. * Transport Wind for Phoenix......Southwest 4 knots. * Dispersion for Phoenix..........Fair. .TONIGHT... * Sky/weather.....................Partly cloudy. * Min Temperature.................72-82. * 24 hr trend..................Little change. * Max Humidity....................40-60 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the evening becoming southeast after midnight. * 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. * Max Temperature.................94-101. * 24 hr trend..................Little change. * Min Humidity....................18-23 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Phoenix.......13000 ft AGL. * Transport Wind for Phoenix......South 12 knots. * Dispersion for Phoenix..........Excellent. .EXTENDED... .TUESDAY...Mostly clear. Lows 70-80. Highs 93-99. Southeast winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 72-82. Highs 95-102. Southeast winds 5 to 15 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 74-84. Highs 96-103. East winds 5 to 15 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-85. Highs 96-104. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 76-86. Highs 96-103. $$ AZZ131-CAZ231-202245- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 332 AM MST Sun Sep 20 2026 /332 AM PDT Sun Sep 20 2026/ .TODAY... * Sky/weather.....................Partly sunny. * Max Temperature.................98-103. * 24 hr trend..................Little change. * Min Humidity....................15-24 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Yuma..........9600 ft AGL. * Transport Wind for Yuma.........South 10 knots. * Dispersion for Yuma.............Excellent. .TONIGHT... * Sky/weather.....................Mostly cloudy in the evening becoming partly cloudy after midnight. * Min Temperature.................73-78. * 24 hr trend..................3 degrees warmer. * Max Humidity....................43-64 pct. * 24 hr trend..................11 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Southeast 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. .MONDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................96-101. * 24 hr trend..................Little change. * Min Humidity....................18-22 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..Southeast 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 Yuma..........9200 ft AGL. * Transport Wind for Yuma.........Southwest 7 knots. * Dispersion for Yuma.............Good. .EXTENDED... .TUESDAY...Clear. Lows 70-75. Highs 96-101. West winds 5 to 10 mph. .WEDNESDAY...Clear. Lows 71-78. Highs 99-104. Southeast winds 5 to 10 mph. .THURSDAY...Clear. Lows 73-81. Highs 100-105. Southeast winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 76-82. Highs 101-106. .SATURDAY...Mostly clear. Lows 76-82. Highs 100-105. $$ AZZ133-202245- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 332 AM MST Sun Sep 20 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................80-97. * 24 hr trend..................Little change. * Min Humidity....................17-28 pct. * 24 hr trend..................3 pct drier. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest 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...............1 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. * Min Temperature.................59-75. * 24 hr trend..................Little change. * Max Humidity....................41-60 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..Northwest 5 to 10 mph in the evening becoming east after midnight. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. .MONDAY... * Sky/weather.....................Partly sunny. * Max Temperature.................80-96. * 24 hr trend..................Little change. * Min Humidity....................20-30 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..East 5 to 10 mph in the morning becoming southwest in the afternoon. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .TUESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 59-75. Highs 78-95. East winds 15 to 25 mph. .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 58-75. Highs 76-95. East winds 15 to 25 mph. .THURSDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 58-75. Highs 76-95. East winds 15 to 25 mph. .FRIDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 58-76. Highs 76-95. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 59-76. Highs 78-95. $$ CAZ232-202245- Imperial County And Eastern Riverside County- 332 AM PDT Sun Sep 20 2026 .TODAY... * Sky/weather.....................Partly sunny. * Max Temperature.................92-101. * 24 hr trend..................Little change. * Min Humidity....................11-21 pct. * 24 hr trend..................7 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. * Min Temperature.................73-78. * 24 hr trend..................Little change. * Max Humidity....................37-62 pct. * 24 hr trend..................17 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .MONDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................90-100. * 24 hr trend..................Little change. * Min Humidity....................14-22 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .TUESDAY...Clear. Lows 69-78. Highs 90-99. West winds 5 to 15 mph. .WEDNESDAY...Clear. Lows 71-79. Highs 94-103. Northeast winds 5 to 15 mph. .THURSDAY...Clear. Lows 73-81. Highs 95-104. Southeast winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 75-81. Highs 95-105. .SATURDAY...Mostly clear. Lows 75-81. Highs 95-104. $$ CAZ230-202245- Joshua Tree National Park- 332 AM PDT Sun Sep 20 2026 .TODAY... * Sky/weather.....................Partly sunny. * Max Temperature.................82-95. * 24 hr trend..................Little change. * Min Humidity....................12-18 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 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.................64-75. * 24 hr trend..................Little change. * Max Humidity....................35-45 pct. * 24 hr trend..................16 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming mostly downslope/downvalley after midnight. * Winds...10000 FT MSL............Southeast 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.................79-93. * 24 hr trend..................3 degrees cooler. * Min Humidity....................18-27 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .TUESDAY...Clear. Lows 60-72. Highs 78-91. Northwest winds 5 to 15 mph. .WEDNESDAY...Clear. Lows 63-74. Highs 81-95. North winds 5 to 15 mph. .THURSDAY...Clear. Lows 64-75. Highs 83-97. Southwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 65-76. Highs 84-98. .SATURDAY...Mostly clear. Lows 63-76. Highs 82-97. $$ .8 TO 10 DAY OUTLOOK...Sunday September 27th through Tuesday September 29th: Above normal temperatures and above median precipitation.