Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
798 FNUS55 KPSR 010936 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 236 AM MST Mon Sep 1 2025 .DISCUSSION... Increasing moisture will result in an enhancement of monsoonal shower and thunderstorm activity over the next few days, but the best chances for wetting rain today should remain focused over the high terrain of the eastern districts. Due to the increase in moisture, MinRHs will hover above critical thresholds through the beginning of the week, with values ranging between 15-25%. Overnight recoveries should provide some decent relief, with MaxRH readings in between 40-60%. Temperatures will gradually decrease during through the middle portion of the week, with above-normal values today, falling closer to seasonal levels by Tuesday. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-012145- 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- 236 AM MST Mon Sep 1 2025 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................102-108. * 24 hr trend..................Little change. * Min Humidity....................16-21 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the morning becoming east 5 to 15 mph in the afternoon. * Chance of Precip................10 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............9 percent. * Mixing Height for Phoenix.......8900 ft AGL. * Transport Wind for Phoenix......East 6 knots. * Dispersion for Phoenix..........Good. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms. * Min Temperature.................81-91. * 24 hr trend..................Little change. * Max Humidity....................44-54 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............East 10 to 20 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............15 percent. .TUESDAY... * Sky/weather.....................Partly sunny. Chance of showers in the morning. slight chance of thunderstorms . slight chance of showers in the afternoon. * Max Temperature.................98-105. * 24 hr trend..................4 degrees cooler. * Min Humidity....................20-29 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............East 15 to 25 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............13 percent. * Mixing Height for Phoenix.......13500 ft AGL. * Transport Wind for Phoenix......Southeast 13 knots. * Dispersion for Phoenix..........Excellent. .EXTENDED... .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 78-88. Highs 97-104. Southwest winds 5 to 10 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows 73-83. Highs 96-102. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 73-83. Highs 93-99. South winds 5 to 15 mph. .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 75-85. Highs 93-100. .SUNDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-85. Highs 93-100. $$ AZZ131-CAZ231-012145- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 236 AM MST Mon Sep 1 2025 /236 AM PDT Mon Sep 1 2025/ .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................105-110. * 24 hr trend..................Little change. * Min Humidity....................17-22 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............East 10 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............4 percent. * Mixing Height for Yuma..........9700 ft AGL. * Transport Wind for Yuma.........Southeast 7 knots. * Dispersion for Yuma.............Good. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms after midnight. * Min Temperature.................82-87. * 24 hr trend..................3 degrees warmer. * Max Humidity....................48-61 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming southeast after midnight. * Winds...10000 FT MSL............East 10 to 20 mph. * Chance of Precip................0 percent in the evening becoming 20 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............13 percent. .TUESDAY... * Sky/weather.....................Partly sunny. Chance of showers in the morning. slight chance of thunderstorms . slight chance of showers in the afternoon. * Max Temperature.................99-104. * 24 hr trend..................6 degrees cooler. * Min Humidity....................26-33 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..East 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............East 15 to 25 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............16 percent. * Mixing Height for Yuma..........10000 ft AGL. * Transport Wind for Yuma.........Southeast 7 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 78-85. Highs 99-104. West winds 5 to 10 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 77-84. Highs 98-103. South winds 5 to 15 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 77-82. Highs 96-101. South winds 5 to 15 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 76-81. Highs 96-101. .SUNDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 76-81. Highs 97-102. $$ AZZ133-012145- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 236 AM MST Mon Sep 1 2025 .TODAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................86-102. * 24 hr trend..................3 degrees cooler. * Min Humidity....................18-31 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the morning becoming east 5 to 15 mph in the afternoon. * Chance of Precip................0 percent in the morning becoming 20 percent in the afternoon. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............23 percent. .TONIGHT... * Sky/weather.....................Mostly cloudy. Slight chance of showers and thunderstorms. * Min Temperature.................64-81. * 24 hr trend..................Little change. * Max Humidity....................46-67 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..East 5 to 15 mph. * Winds...10000 FT MSL............East 10 to 20 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............18 percent. .TUESDAY... * Sky/weather.....................Partly sunny. Chance of showers and thunderstorms in the afternoon. * Max Temperature.................85-101. * 24 hr trend..................Little change. * Min Humidity....................18-28 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Southeast 15 to 25 mph. * Chance of Precip................0 percent in the morning becoming 30 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............30 percent. .EXTENDED... .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 62-79. Highs 85-100. Southeast winds 5 to 15 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows 59-78. Highs 85-99. West winds 5 to 15 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows 59-75. Highs 81-94. Southwest winds 5 to 15 mph. .SATURDAY...Partly cloudy with chance of showers and thunderstorms. Lows 60-76. Highs 81-95. .SUNDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 60-76. Highs 82-96. $$ CAZ232-012145- Imperial County And Eastern Riverside County- 236 AM PDT Mon Sep 1 2025 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................101-110. * 24 hr trend..................Little change. * Min Humidity....................15-21 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............4 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms after midnight. * Min Temperature.................81-86. * 24 hr trend..................Little change. * Max Humidity....................42-65 pct. * 24 hr trend..................14 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............East 10 to 20 mph. * Chance of Precip................0 percent in the evening becoming 20 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............14 percent. .TUESDAY... * Sky/weather.....................Partly sunny. Chance of showers in the morning. slight chance of thunderstorms . slight chance of showers in the afternoon. * Max Temperature.................94-102. * 24 hr trend..................8 degrees cooler. * Min Humidity....................25-34 pct. * 24 hr trend..................11 pct wetter. * Winds - 20 foot...Slope/Valley..Northeast 5 to 15 mph. * Winds...10000 FT MSL............East 10 to 20 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............16 percent. .EXTENDED... .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 78-85. Highs 95-104. Northwest winds 5 to 10 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 77-84. Highs 94-103. South winds 5 to 15 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 76-82. Highs 92-101. South winds 5 to 15 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-82. Highs 92-101. .SUNDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-81. Highs 93-101. $$ CAZ230-012145- Joshua Tree National Park- 236 AM PDT Mon Sep 1 2025 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................92-105. * 24 hr trend..................Little change. * Min Humidity....................14-19 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..North 5 to 10 mph in the morning becoming southeast in the afternoon. * Winds...10000 FT MSL............Southeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............3 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms after midnight. * Min Temperature.................70-83. * 24 hr trend..................Little change. * Max Humidity....................39-49 pct. * 24 hr trend..................18 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming northwest after midnight. * Winds...10000 FT MSL............Light and variable in the evening becoming southeast 10 to 20 mph after midnight. * Chance of Precip................0 percent in the evening becoming 20 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............14 percent. .TUESDAY... * Sky/weather.....................Mostly cloudy. Slight chance of thunderstorms in the morning. chance of showers . chance of thunderstorms in the afternoon. * Max Temperature.................83-96. * 24 hr trend..................9 degrees cooler. * Min Humidity....................29-35 pct. * 24 hr trend..................15 pct wetter. * Winds - 20 foot...Slope/Valley..North 5 to 10 mph in the morning becoming east in the afternoon. * Winds...10000 FT MSL............East 10 to 15 mph. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............32 percent. .EXTENDED... .WEDNESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 68-79. Highs 84-97. Northwest winds 5 to 10 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 67-79. Highs 85-98. Southwest winds 5 to 15 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 65-77. Highs 83-96. South winds 5 to 15 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 64-77. Highs 82-96. .SUNDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 64-76. Highs 83-96. $$ .8 TO 10 DAY OUTLOOK...Monday September 8th through Wednesday September 10th: Near to above normal temperatures and above median precipitation.