Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
226 FNUS55 KPSR 032043 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 143 PM MST Wed Sep 3 2025 .DISCUSSION... Increased moisture levels will result in much better chances for wetting rainfall and a reduced wildfire threat through Friday. The best chances for rain are likely to be later Thursday into early Friday, with flash flooding and gusty erratic outflow winds being the primary concerns. Enhanced moisture availability will result in MinRHs only falling to between 20-30% range today and 30-40% on Thursday and Friday as temperatures drop to below normal. Outside of thunderstorm impacts, winds will remain fairly light and follow diurnal trends today before favoring a southerly direction for Thursday and Friday. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-040845- 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- 143 PM MST Wed Sep 3 2025 .TONIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms. * Min Temperature.................76-86. * 24 hr trend..................Little change. * Max Humidity....................58-70 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 15 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............15 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the morning becoming chance of showers and thunderstorms in the afternoon. * Max Temperature.................93-99. * 24 hr trend..................5 degrees cooler. * Min Humidity....................32-42 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............37 percent. * Mixing Height for Phoenix.......7300 ft AGL. * Transport Wind for Phoenix......South 8 knots. * Dispersion for Phoenix..........Good. .THURSDAY NIGHT... * Sky/weather.....................Mostly cloudy in the evening becoming partly cloudy after midnight. Showers likely and chance of thunderstorms in the evening becoming chance of showers and slight chance of thunderstorms after midnight. * Min Temperature.................72-82. * 24 hr trend..................4 degrees cooler. * Max Humidity....................70-82 pct. * 24 hr trend..................12 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph in the evening becoming east 5 to 10 mph after midnight. * Winds...10000 FT MSL............East 10 to 15 mph. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................40 percent west portion...60 percent east portion. * Chance of Thunder...............42 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Chance of showers and slight chance of thunderstorms. * Max Temperature.................87-95. * 24 hr trend..................5 degrees cooler. * Min Humidity....................39-50 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Northeast 10 to 20 mph. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................0 percent west portion...20 percent east portion. * Chance of Thunder...............21 percent. * Mixing Height for Phoenix.......5100 ft AGL. * Transport Wind for Phoenix......Southeast 9 knots. * Dispersion for Phoenix..........Good. .EXTENDED... .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 72-82. Highs 90-96. South winds 5 to 10 mph. .SUNDAY...Clear. Lows 74-84. Highs 93-100. Southwest winds 5 to 10 mph. .MONDAY...Clear. Lows 74-84. Highs 97-103. Southwest winds 5 to 10 mph. .TUESDAY...Clear. Lows 72-82. Highs 97-104. .WEDNESDAY...Clear. Lows 71-81. Highs 95-102. $$ AZZ131-CAZ231-040845- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 143 PM MST Wed Sep 3 2025 /143 PM PDT Wed Sep 3 2025/ .TONIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................79-84. * 24 hr trend..................Little change. * Max Humidity....................66-79 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming southeast 5 to 15 mph after midnight. * Chance of Precip................10 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............12 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers in the morning. slight chance of thunderstorms . chance of showers in the afternoon. * Max Temperature.................96-101. * 24 hr trend..................Little change. * Min Humidity....................33-41 pct. * 24 hr trend..................7 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............23 percent. * Mixing Height for Yuma..........7000 ft AGL. * Transport Wind for Yuma.........South 15 knots. * Dispersion for Yuma.............Excellent. .THURSDAY NIGHT... * Sky/weather.....................Partly cloudy. Chance of showers in the evening. slight chance of thunderstorms . slight chance of showers after midnight. * Min Temperature.................75-81. * 24 hr trend..................3 degrees cooler. * Max Humidity....................73-91 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming northeast 5 to 15 mph after midnight. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................30 percent. * Chance of Thunder...............27 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Chance of showers . slight chance of thunderstorms in the afternoon. * Max Temperature.................93-98. * 24 hr trend..................3 degrees cooler. * Min Humidity....................38-47 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Northeast 10 to 20 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............18 percent. * Mixing Height for Yuma..........7500 ft AGL. * Transport Wind for Yuma.........Northeast 9 knots. * Dispersion for Yuma.............Fair. .EXTENDED... .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 76-81. Highs 94-99. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 76-81. Highs 97-102. South winds 5 to 15 mph. .MONDAY...Clear. Lows 72-80. Highs 99-104. Southwest winds 5 to 15 mph. .TUESDAY...Clear. Lows 70-78. Highs 99-104. .WEDNESDAY...Clear. Lows 68-76. Highs 96-101. $$ AZZ133-040845- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 143 PM MST Wed Sep 3 2025 .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................61-77. * 24 hr trend..................Little change. * Max Humidity....................51-67 pct. * 24 hr trend..................12 pct wetter. * Winds - 20 foot...Slope/Valley..West 5 to 10 mph in the evening becoming northeast after midnight. * Winds...10000 FT MSL............South 5 to 15 mph. * Chance of Precip................10 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............13 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the morning becoming chance of showers and thunderstorms in the afternoon. * Max Temperature.................82-96. * 24 hr trend..................6 degrees cooler. * Min Humidity....................27-41 pct. * 24 hr trend..................12 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................50 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............45 percent. .THURSDAY NIGHT... * Sky/weather.....................Mostly cloudy. Showers likely and chance of thunderstorms in the evening becoming chance of showers and slight chance of thunderstorms after midnight. * Min Temperature.................58-74. * 24 hr trend..................4 degrees cooler. * Max Humidity....................68-89 pct. * 24 hr trend..................18 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming southeast after midnight. * Winds...10000 FT MSL............Light and variable in the evening becoming east 5 to 15 mph after midnight. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................50 percent. * Chance of Thunder...............43 percent. .FRIDAY... * Sky/weather.....................Mostly cloudy. Chance of showers in the morning becoming showers likely and chance of thunderstorms in the afternoon. * Max Temperature.................74-88. * 24 hr trend..................8 degrees cooler. * Min Humidity....................40-56 pct. * 24 hr trend..................15 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............East 15 to 25 mph. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................50 percent. * Chance of Thunder...............35 percent. .EXTENDED... .SATURDAY...Partly cloudy with chance of showers and thunderstorms. Lows 58-74. Highs 77-90. Southwest winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 58-76. Highs 82-95. Northwest winds 5 to 15 mph. .MONDAY...Clear. Lows 59-76. Highs 84-98. West winds 5 to 15 mph. .TUESDAY...Clear. Lows 60-76. Highs 85-99. .WEDNESDAY...Clear. Lows 60-76. Highs 84-99. $$ CAZ232-040845- Imperial County And Eastern Riverside County- 143 PM PDT Wed Sep 3 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................78-84. * 24 hr trend..................Little change. * Max Humidity....................51-81 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming east 5 to 15 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............6 percent. .THURSDAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms . * Max Temperature.................93-102. * 24 hr trend..................Little change. * Min Humidity....................29-41 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............19 percent. .THURSDAY NIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................74-81. * 24 hr trend..................3 degrees cooler. * Max Humidity....................68-93 pct. * 24 hr trend..................13 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming northeast 5 to 15 mph after midnight. * Chance of Precip................20 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............19 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Chance of showers . slight chance of thunderstorms in the afternoon. * Max Temperature.................90-99. * 24 hr trend..................3 degrees cooler. * Min Humidity....................34-46 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Northeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............16 percent. .EXTENDED... .SATURDAY...Mostly clear with slight chance of showers. Lows 74-82. Highs 91-101. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 74-81. Highs 93-102. South winds 5 to 15 mph. .MONDAY...Clear. Lows 72-79. Highs 94-103. Southwest winds 5 to 15 mph. .TUESDAY...Clear. Lows 69-77. Highs 93-102. .WEDNESDAY...Clear. Lows 68-74. Highs 90-99. $$ CAZ230-040845- Joshua Tree National Park- 143 PM PDT Wed Sep 3 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................68-79. * 24 hr trend..................3 degrees warmer. * Max Humidity....................49-61 pct. * 24 hr trend..................9 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............5 percent. .THURSDAY... * Sky/weather.....................Sunny in the morning becoming partly sunny in the afternoon. Slight chance of showers and thunderstorms . * Max Temperature.................83-96. * 24 hr trend..................Little change. * Min Humidity....................31-41 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............21 percent. .THURSDAY NIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................63-76. * 24 hr trend..................4 degrees cooler. * Max Humidity....................69-89 pct. * 24 hr trend..................24 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Northwest 5 to 15 mph in the evening becoming northeast after midnight. * Chance of Precip................20 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............15 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers in the morning becoming chance of showers and slight chance of thunderstorms in the afternoon. * Max Temperature.................80-93. * 24 hr trend..................3 degrees cooler. * Min Humidity....................36-48 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Northeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............18 percent. .EXTENDED... .SATURDAY...Mostly clear with slight chance of showers. Lows 63-76. Highs 81-95. Southwest winds 5 to 15 mph. .SUNDAY...Clear. Lows 63-75. Highs 83-96. Southwest winds 5 to 15 mph. .MONDAY...Clear. Lows 61-74. Highs 84-97. West winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Clear. Lows 58-72. Highs 81-96. .WEDNESDAY...Clear. Lows 58-69. Highs 79-94. $$ .8 TO 10 DAY OUTLOOK...Thursday September 11th through Saturday September 13th: Near to above normal temperatures and below median precipitation.