Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
819 FNUS55 KPSR 220807 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 107 AM MST Sat Aug 22 2026 .DISCUSSION... Above normal temperatures continue into next week. MinRH values will be around 12-20% today and increase to around 15-25% tomorrow with overnight recovery of 30-60%. Scattered thunderstorms are expected across the higher terrain areas this weekend with only slight chances for isolated showers and storms across the south- central AZ lower deserts. Outside of thunderstorm outflow winds, winds will follow the typical diurnal tendencies with some modest afternoon upslope gustiness. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-222015- 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- 107 AM MST Sat Aug 22 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................108-115. * 24 hr trend..................Little change. * Min Humidity....................12-16 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming west 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................10 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............2 percent. * Mixing Height for Phoenix.......14700 ft AGL. * Transport Wind for Phoenix......West 6 knots. * Dispersion for Phoenix..........Good. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................83-93. * 24 hr trend..................Little change. * Max Humidity....................28-41 pct. * 24 hr trend..................Little change. * 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. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............3 percent. .SUNDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................105-111. * 24 hr trend..................3 degrees cooler. * Min Humidity....................16-22 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * 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...............0 percent. * Mixing Height for Phoenix.......14100 ft AGL. * Transport Wind for Phoenix......West 6 knots. * Dispersion for Phoenix..........Very good. .EXTENDED... .MONDAY...Partly cloudy. Lows 81-91. Highs 103-109. Southwest winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 82-92. Highs 106-113. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 83-93. Highs 108-114. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .THURSDAY...Mostly clear. Lows 83-93. Highs 108-114. .FRIDAY...Mostly clear. Lows 84-94. Highs 108-114. $$ AZZ131-CAZ231-222015- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 107 AM MST Sat Aug 22 2026 /107 AM PDT Sat Aug 22 2026/ .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................111-116. * 24 hr trend..................Little change. * Min Humidity....................11-15 pct. * 24 hr trend..................3 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 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..........16200 ft AGL. * Transport Wind for Yuma.........Southwest 7 knots. * Dispersion for Yuma.............Very good. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................84-89. * 24 hr trend..................Little change. * Max Humidity....................29-41 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. .SUNDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................109-114. * 24 hr trend..................3 degrees cooler. * Min Humidity....................15-22 pct. * 24 hr trend..................6 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. * Mixing Height for Yuma..........9600 ft AGL. * Transport Wind for Yuma.........South 10 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .MONDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 82-87. Highs 105-110. South winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 83-89. Highs 108-113. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 84-89. Highs 110-115. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .THURSDAY...Mostly clear. Lows 84-89. Highs 110-115. .FRIDAY...Mostly clear. Lows 84-89. Highs 110-115. $$ AZZ133-222015- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 107 AM MST Sat Aug 22 2026 .TODAY... * Sky/weather.....................Partly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. * Max Temperature.................93-109. * 24 hr trend..................Little change. * Min Humidity....................13-21 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..East 5 to 10 mph in the morning becoming southwest 5 to 15 mph 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................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............18 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................66-84. * 24 hr trend..................Little change. * Max Humidity....................37-56 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Northeast 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................20 percent in the evening becoming 10 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............11 percent. .SUNDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................92-107. * 24 hr trend..................Little change. * Min Humidity....................15-23 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming west in the afternoon. * Winds...10000 FT MSL............Southeast 5 to 15 mph in the morning becoming southwest in the afternoon. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .MONDAY...Partly cloudy. Lows 66-83. Highs 91-106. Northwest winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 66-84. Highs 93-108. Northwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 67-84. Highs 94-110. North winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 67-85. Highs 95-110. .FRIDAY...Mostly clear. Lows 67-85. Highs 95-110. $$ CAZ232-222015- Imperial County And Eastern Riverside County- 107 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................105-115. * 24 hr trend..................Little change. * Min Humidity....................11-17 pct. * 24 hr trend..................4 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 5 to 10 mph in the morning becoming south 5 to 15 mph in the afternoon. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................84-90. * 24 hr trend..................Little change. * Max Humidity....................25-40 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .SUNDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................104-113. * 24 hr trend..................Little change. * Min Humidity....................13-20 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .MONDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 82-89. Highs 101-110. South winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 83-91. Highs 103-113. West winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 85-91. Highs 105-115. Southwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 84-91. Highs 105-114. .FRIDAY...Mostly clear. Lows 84-91. Highs 105-114. $$ CAZ230-222015- Joshua Tree National Park- 107 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................95-109. * 24 hr trend..................Little change. * Min Humidity....................13-18 pct. * 24 hr trend..................5 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...............0 percent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................73-86. * 24 hr trend..................Little change. * Max Humidity....................27-34 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..West 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...............0 percent. .SUNDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................94-108. * 24 hr trend..................Little change. * Min Humidity....................13-18 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..West 5 to 10 mph in the morning becoming south 5 to 15 mph in the afternoon. * 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. .EXTENDED... .MONDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 72-85. Highs 91-104. Southwest winds 5 to 15 mph. .TUESDAY...Clear. Lows 72-87. Highs 93-106. West winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 74-87. Highs 95-109. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 74-87. Highs 94-109. .FRIDAY...Mostly clear. Lows 74-87. Highs 95-109. $$ .8 TO 10 DAY OUTLOOK...Saturday August 29th through Monday August 31st: Above normal temperatures and near median precipitation.