Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
821 FNUS55 KPSR 172011 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 111 PM MST Sun Aug 17 2025 .DISCUSSION... Generally dry conditions with temperatures gradually warming up during the next couple of days can be expected. Winds will continue to follow diurnal patterns with some afternoon gusts in the 15-20 mph range. Relative humidity will bottom out around 15-25% across the eastern districts and 10-20% across the western districts each afternoon. Overnight recovery will range from poor to fair. Thunderstorm activity will remain limited over the next few days with rain chances remaining at or below 20% across the high terrain east of Phoenix before chances increase somewhat starting on Tuesday. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-180815- 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- 111 PM MST Sun Aug 17 2025 .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................75-85. * 24 hr trend..................Little change. * Max Humidity....................25-42 pct. * 24 hr trend..................10 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 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...............2 percent. .MONDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................101-106. * 24 hr trend..................Little change. * Min Humidity....................14-19 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southeast 10 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............5 percent. * Mixing Height for Phoenix.......8200 ft AGL. * Transport Wind for Phoenix......West 8 knots. * Dispersion for Phoenix..........Good. .MONDAY NIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................79-89. * 24 hr trend..................4 degrees warmer. * Max Humidity....................28-42 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southeast 10 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............6 percent. .TUESDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................103-108. * 24 hr trend..................Little change. * Min Humidity....................16-20 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 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 Phoenix.......6600 ft AGL. * Transport Wind for Phoenix......West 6 knots. * Dispersion for Phoenix..........Good. .EXTENDED... .WEDNESDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 82-92. Highs 106-111. Southwest winds 5 to 10 mph. .THURSDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 84-94. Highs 107-113. South winds 5 to 10 mph. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 83-93. Highs 107-113. Southwest winds 5 to 15 mph. .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 83-93. Highs 104-110. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 80-90. Highs 103-109. $$ AZZ131-CAZ231-180815- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 111 PM MST Sun Aug 17 2025 /111 PM PDT Sun Aug 17 2025/ .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................72-77. * 24 hr trend..................Little change. * Max Humidity....................33-53 pct. * 24 hr trend..................10 pct drier. * 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. .MONDAY... * Sky/weather.....................Sunny. * Max Temperature.................103-108. * 24 hr trend..................Little change. * Min Humidity....................14-18 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................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............3 percent. * Mixing Height for Yuma..........7800 ft AGL. * Transport Wind for Yuma.........South 9 knots. * Dispersion for Yuma.............Very good. .MONDAY NIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................78-83. * 24 hr trend..................6 degrees warmer. * Max Humidity....................32-51 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............7 percent. .TUESDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................104-109. * 24 hr trend..................Little change. * Min Humidity....................16-20 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............5 percent. * Mixing Height for Yuma..........5500 ft AGL. * Transport Wind for Yuma.........South 7 knots. * Dispersion for Yuma.............Good. .EXTENDED... .WEDNESDAY...Mostly clear. Lows 81-89. Highs 107-112. Southwest winds 5 to 10 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 83-89. Highs 109-114. South winds 5 to 15 mph. .FRIDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 84-89. Highs 109-114. South winds 5 to 15 mph. .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 83-88. Highs 106-111. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 82-87. Highs 106-111. $$ AZZ133-180815- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 111 PM MST Sun Aug 17 2025 .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................64-79. * 24 hr trend..................3 degrees warmer. * Max Humidity....................28-43 pct. * 24 hr trend..................11 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 5 to 15 mph. * Winds...10000 FT MSL............West 5 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............3 percent. .MONDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................90-103. * 24 hr trend..................Little change. * Min Humidity....................13-19 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..Northwest 5 to 10 mph in the morning becoming west in the afternoon. * Winds...10000 FT MSL............East 5 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............7 percent. .MONDAY NIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................65-82. * 24 hr trend..................Little change. * Max Humidity....................35-58 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..West 5 to 10 mph in the evening becoming east after midnight. * Winds...10000 FT MSL............Northeast 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...............10 percent. .TUESDAY... * Sky/weather.....................Partly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. * Max Temperature.................91-105. * 24 hr trend..................Little change. * Min Humidity....................16-26 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............Light and variable. * Chance of Precip................0 percent in the morning becoming 20 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............22 percent. .EXTENDED... .WEDNESDAY...Partly cloudy with chance of showers and thunderstorms. Lows 65-85. Highs 92-107. East winds 5 to 15 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows 65-85. Highs 92-108. East winds 5 to 15 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows 65-84. Highs 92-107. East winds 5 to 15 mph. .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 65-84. Highs 90-105. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 65-84. Highs 89-104. $$ CAZ232-180815- Imperial County And Eastern Riverside County- 111 PM PDT Sun Aug 17 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................73-80. * 24 hr trend..................Little change. * Max Humidity....................26-58 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming south 5 to 15 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .MONDAY... * Sky/weather.....................Sunny. * Max Temperature.................98-107. * 24 hr trend..................Little change. * Min Humidity....................11-17 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Northeast 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...............1 percent. .MONDAY NIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................78-84. * 24 hr trend..................5 degrees warmer. * Max Humidity....................24-51 pct. * 24 hr trend..................4 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............South 5 to 15 mph in the evening becoming southeast 15 to 25 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............4 percent. .TUESDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................100-109. * 24 hr trend..................Little change. * Min Humidity....................14-20 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............4 percent. .EXTENDED... .WEDNESDAY...Mostly clear. Lows 81-90. Highs 102-112. Southwest winds 5 to 15 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 84-92. Highs 104-114. South winds 5 to 10 mph. .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 84-92. Highs 105-114. South winds 5 to 15 mph. .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 83-91. Highs 102-111. .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 82-90. Highs 101-111. $$ CAZ230-180815- Joshua Tree National Park- 111 PM PDT Sun Aug 17 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................65-75. * 24 hr trend..................Little change. * Max Humidity....................26-33 pct. * 24 hr trend..................4 pct drier. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming south 5 to 15 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .MONDAY... * Sky/weather.....................Sunny. * Max Temperature.................88-102. * 24 hr trend..................3 degrees warmer. * Min Humidity....................12-16 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Northeast 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...............0 percent. .MONDAY NIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................69-79. * 24 hr trend..................4 degrees warmer. * Max Humidity....................26-32 pct. * 24 hr trend..................Little 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...............2 percent. .TUESDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................90-103. * 24 hr trend..................Little change. * Min Humidity....................16-21 pct. * 24 hr trend..................4 pct wetter. * Winds - 20 foot...Slope/Valley..North 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...............5 percent. .EXTENDED... .WEDNESDAY...Mostly clear. Lows 72-85. Highs 92-106. Southwest winds 5 to 15 mph. .THURSDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-87. Highs 94-108. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 75-87. Highs 95-109. Southwest winds 5 to 15 mph. .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 75-86. Highs 92-106. .SUNDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 72-86. Highs 92-105. $$ .8 TO 10 DAY OUTLOOK...Monday August 25th through Wednesday August 27th: Above normal temperatures and above median precipitation.