Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
492 FNUS55 KPSR 122030 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 130 PM MST Wed Aug 12 2026 .DISCUSSION... Elevated humidity levels, cooler temperatures, and good chances for wetting rains are anticipated through Thursday morning over at least the eastern districts. The best rain chances will be during the evening and overnight hours tonight with lingering chances through Thursday afternoon. Afternoon MinRHs will range between 25-35% across the lower deserts and 40-50% for the eastern high terrain, while overnight recoveries will remain excellent. Winds will predominately be out of the south southwest much of the period with the exception of any modest outflows from thunderstorm activity. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-130830- 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- 130 PM MST Wed Aug 12 2026 .TONIGHT... * Sky/weather.....................Partly cloudy. Chance of showers and thunderstorms in the evening. slight chance of showers and thunderstorms after midnight. * Min Temperature.................75-85. * 24 hr trend..................Little change. * Max Humidity....................58-71 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph in the evening becoming southeast 5 to 10 mph after midnight. * Winds...10000 FT MSL............Southwest 5 to 15 mph in the evening becoming light and variable after midnight. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent west portion...30 percent east portion. * Chance of Thunder...............27 percent. .THURSDAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................95-103. * 24 hr trend..................Little change. * Min Humidity....................26-34 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 15 mph. * Chance of Precip................0 percent in the morning becoming 10 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............13 percent. * Mixing Height for Phoenix.......12400 ft AGL. * Transport Wind for Phoenix......Southwest 9 knots. * Dispersion for Phoenix..........Excellent. .THURSDAY NIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................75-85. * 24 hr trend..................Little change. * Max Humidity....................51-64 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................10 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............12 percent. .FRIDAY... * Sky/weather.....................Partly sunny. * Max Temperature.................95-102. * 24 hr trend..................Little change. * Min Humidity....................23-30 pct. * 24 hr trend..................4 pct drier. * 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...............3 percent. * Mixing Height for Phoenix.......11100 ft AGL. * Transport Wind for Phoenix......Southwest 6 knots. * Dispersion for Phoenix..........Good. .EXTENDED... .SATURDAY...Mostly clear. Lows 76-86. Highs 99-106. South winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 78-88. Highs 102-109. Southwest winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 80-90. Highs 104-111. Southwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 83-93. Highs 105-112. .WEDNESDAY...Mostly clear. Lows 80-90. Highs 104-110. $$ AZZ131-CAZ231-130830- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 130 PM MST Wed Aug 12 2026 /130 PM PDT Wed Aug 12 2026/ .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................78-83. * 24 hr trend..................Little change. * Max Humidity....................52-65 pct. * 24 hr trend..................8 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............West 5 to 15 mph in the evening becoming light and variable after midnight. * Chance of Precip................20 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............16 percent. .THURSDAY... * Sky/weather.....................Partly sunny. * Max Temperature.................99-104. * 24 hr trend..................Little change. * Min Humidity....................27-33 pct. * 24 hr trend..................Little 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...............6 percent. * Mixing Height for Yuma..........10200 ft AGL. * Transport Wind for Yuma.........Southwest 8 knots. * Dispersion for Yuma.............Good. .THURSDAY NIGHT... * Sky/weather.....................Mostly cloudy. * Min Temperature.................77-82. * 24 hr trend..................Little change. * Max Humidity....................49-63 pct. * 24 hr trend..................3 pct drier. * 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...............8 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers in the morning. * Max Temperature.................98-103. * 24 hr trend..................Little change. * Min Humidity....................26-32 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 15 mph. * Chance of Precip................10 percent in the morning becoming 0 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............7 percent. * Mixing Height for Yuma..........9900 ft AGL. * Transport Wind for Yuma.........South 8 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .SATURDAY...Mostly clear. Lows 77-83. Highs 101-106. South winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 79-84. Highs 104-109. South winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 80-86. Highs 106-111. Southwest winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 82-87. Highs 107-112. .WEDNESDAY...Mostly clear. Lows 81-87. Highs 105-110. $$ AZZ133-130830- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 130 PM MST Wed Aug 12 2026 .TONIGHT... * 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.................61-76. * 24 hr trend..................Little change. * Max Humidity....................71-97 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..North 5 to 15 mph. * Winds...10000 FT MSL............West 15 to 25 mph in the evening becoming 5 to 15 mph after midnight. * Chance of Precip................70 percent. * CWR (>= 0.10 IN)................70 percent. * Chance of Thunder...............57 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms. * Max Temperature.................79-95. * 24 hr trend..................Little change. * Min Humidity....................32-50 pct. * 24 hr trend..................5 pct wetter. * 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 15 mph. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............19 percent. .THURSDAY NIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms. * Min Temperature.................61-75. * 24 hr trend..................Little change. * Max Humidity....................64-90 pct. * 24 hr trend..................7 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming east after midnight. * Winds...10000 FT MSL............Southwest 5 to 15 mph in the evening becoming light and variable after midnight. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............19 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms. * Max Temperature.................82-96. * 24 hr trend..................Little change. * Min Humidity....................28-41 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest in the afternoon. * 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...............8 percent. .EXTENDED... .SATURDAY...Partly cloudy. Lows 61-79. Highs 86-100. Northwest winds 5 to 15 mph. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 63-80. Highs 88-103. Northeast winds 5 to 15 mph. .MONDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 64-83. Highs 89-105. East winds 5 to 15 mph. .TUESDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 66-83. Highs 90-106. .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 65-83. Highs 90-105. $$ CAZ232-130830- Imperial County And Eastern Riverside County- 130 PM PDT Wed Aug 12 2026 .TONIGHT... * Sky/weather.....................Partly cloudy. * Min Temperature.................77-84. * 24 hr trend..................Little change. * Max Humidity....................44-57 pct. * 24 hr trend..................13 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 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...............7 percent. .THURSDAY... * Sky/weather.....................Partly sunny. * Max Temperature.................93-103. * 24 hr trend..................3 degrees cooler. * Min Humidity....................19-29 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...............2 percent. .THURSDAY NIGHT... * Sky/weather.....................Partly cloudy in the evening becoming mostly cloudy after midnight. * Min Temperature.................76-82. * 24 hr trend..................Little change. * Max Humidity....................42-59 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..West 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...............3 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers in the morning. * Max Temperature.................93-102. * 24 hr trend..................Little change. * Min Humidity....................22-31 pct. * 24 hr trend..................Little RH change. * 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...............5 percent. .EXTENDED... .SATURDAY...Mostly clear. Lows 76-84. Highs 96-105. South winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 78-84. Highs 99-108. Southwest winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 79-86. Highs 100-110. West winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 81-87. Highs 101-111. .WEDNESDAY...Mostly clear. Lows 79-87. Highs 100-110. $$ CAZ230-130830- Joshua Tree National Park- 130 PM PDT Wed Aug 12 2026 .TONIGHT... * Sky/weather.....................Partly cloudy. * Min Temperature.................66-81. * 24 hr trend..................Little change. * Max Humidity....................43-54 pct. * 24 hr trend..................8 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 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...............2 percent. .THURSDAY... * Sky/weather.....................Mostly cloudy. * Max Temperature.................82-97. * 24 hr trend..................3 degrees cooler. * Min Humidity....................21-31 pct. * 24 hr trend..................3 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...............1 percent. .THURSDAY NIGHT... * Sky/weather.....................Partly cloudy in the evening becoming mostly cloudy after midnight. * Min Temperature.................64-79. * 24 hr trend..................Little change. * Max Humidity....................41-52 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming southwest 5 to 15 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. .FRIDAY... * Sky/weather.....................Partly sunny. * Max Temperature.................83-96. * 24 hr trend..................Little change. * Min Humidity....................22-29 pct. * 24 hr trend..................Little change. * 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...............3 percent. .EXTENDED... .SATURDAY...Mostly clear. Lows 65-80. Highs 86-99. Southwest winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 67-80. Highs 88-102. Southwest winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 68-82. Highs 90-104. West winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 69-83. Highs 91-105. .WEDNESDAY...Mostly clear. Lows 68-83. Highs 90-104. $$ .8 TO 10 DAY OUTLOOK...Thursday August 25th through Saturday August 22nd: Above normal temperatures and above median precipitation.