Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
046 FNUS55 KPSR 210827 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 127 AM MST Mon Sep 21 2026 .DISCUSSION... Temperatures will remain near the seasonal normal with dry conditions giving way to a chance of thunderstorms over far eastern districts starting Tuesday. Minimum humidity values will fall into a 15-30% range following fair to good overnight recovery of 30-70%. Outside of some occasional localized breeziness due to an approaching system, winds should retain a typical upslope/drainage pattern over the next few days ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-212030- 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- 127 AM MST Mon Sep 21 2026 .TODAY... * Sky/weather.....................Partly sunny. * Max Temperature.................93-101. * 24 hr trend..................Little change. * Min Humidity....................18-23 pct. * 24 hr trend..................Little RH 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...............1 percent. * Mixing Height for Phoenix.......12200 ft AGL. * Transport Wind for Phoenix......South 10 knots. * Dispersion for Phoenix..........Excellent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................70-80. * 24 hr trend..................4 degrees cooler. * Max Humidity....................37-53 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..South 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...............1 percent. .TUESDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................92-99. * 24 hr trend..................Little change. * Min Humidity....................17-23 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 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Phoenix.......10400 ft AGL. * Transport Wind for Phoenix......Southeast 8 knots. * Dispersion for Phoenix..........Very good. .EXTENDED... .WEDNESDAY...Mostly clear. Lows 72-82. Highs 92-100. East winds 5 to 15 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 72-82. Highs 92-100. East winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 72-82. Highs 94-102. East winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 75-85. Highs 97-104. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 73-83. Highs 93-100. $$ AZZ131-CAZ231-212030- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 127 AM MST Mon Sep 21 2026 /127 AM PDT Mon Sep 21 2026/ .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................96-101. * 24 hr trend..................Little change. * Min Humidity....................17-21 pct. * 24 hr trend..................Little 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...............1 percent. * Mixing Height for Yuma..........9100 ft AGL. * Transport Wind for Yuma.........Southwest 8 knots. * Dispersion for Yuma.............Very good. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................68-73. * 24 hr trend..................6 degrees cooler. * Max Humidity....................46-57 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 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. .TUESDAY... * Sky/weather.....................Sunny. * Max Temperature.................95-100. * 24 hr trend..................Little change. * Min Humidity....................13-18 pct. * 24 hr trend..................4 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 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...............0 percent. * Mixing Height for Yuma..........8500 ft AGL. * Transport Wind for Yuma.........South 3 knots. * Dispersion for Yuma.............Poor. .EXTENDED... .WEDNESDAY...Mostly clear. Lows 70-79. Highs 98-103. Southeast winds 5 to 10 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 74-80. Highs 98-103. Southeast winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 74-80. Highs 100-105. Southeast winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 76-81. Highs 102-107. .SUNDAY...Mostly clear. Lows 73-81. Highs 97-102. $$ AZZ133-212030- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 127 AM MST Mon Sep 21 2026 .TODAY... * Sky/weather.....................Partly sunny. * Max Temperature.................81-96. * 24 hr trend..................Little change. * Min Humidity....................21-30 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 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...............2 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. * Min Temperature.................59-74. * 24 hr trend..................Little change. * Max Humidity....................43-65 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................10 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............4 percent. .TUESDAY... * Sky/weather.....................Partly sunny. Slight chance of showers . slight chance of thunderstorms in the afternoon. * Max Temperature.................78-94. * 24 hr trend..................Little change. * Min Humidity....................24-39 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............17 percent. .EXTENDED... .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 57-74. Highs 75-92. East winds 10 to 20 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows 57-73. Highs 76-92. East winds 10 to 20 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 57-74. Highs 77-93. East winds 10 to 20 mph. .SATURDAY...Mostly clear. Lows 58-75. Highs 81-97. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 59-75. Highs 77-93. $$ CAZ232-212030- Imperial County And Eastern Riverside County- 127 AM PDT Mon Sep 21 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................90-100. * 24 hr trend..................Little change. * Min Humidity....................11-20 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................67-73. * 24 hr trend..................6 degrees cooler. * Max Humidity....................40-60 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TUESDAY... * Sky/weather.....................Sunny. * Max Temperature.................89-98. * 24 hr trend..................Little change. * Min Humidity....................11-20 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Northwest 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .WEDNESDAY...Clear. Lows 70-80. Highs 92-102. Northeast winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 74-81. Highs 93-102. Southeast winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 74-81. Highs 94-104. Southeast winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 74-81. Highs 95-106. .SUNDAY...Mostly clear. Lows 71-80. Highs 92-102. $$ CAZ230-212030- Joshua Tree National Park- 127 AM PDT Mon Sep 21 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................77-93. * 24 hr trend..................3 degrees cooler. * Min Humidity....................16-24 pct. * 24 hr trend..................7 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...............2 percent. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................59-70. * 24 hr trend..................5 degrees cooler. * Max Humidity....................43-53 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..West 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. .TUESDAY... * Sky/weather.....................Sunny. * Max Temperature.................77-90. * 24 hr trend..................Little change. * Min Humidity....................18-23 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..North 5 to 15 mph. * Winds...10000 FT MSL............South 5 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .WEDNESDAY...Clear. Lows 63-75. Highs 81-94. North winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 65-75. Highs 81-95. Southwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 65-76. Highs 82-96. Southwest winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 63-76. Highs 85-97. .SUNDAY...Mostly clear. Lows 61-74. Highs 80-94. $$ .8 TO 10 DAY OUTLOOK...Monday September 28th through Wednesday September 30th: Above normal temperatures and above median precipitation.