807
FNUS55 KPSR 031924
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1224 PM MST THU SEP 3 2026
DISCUSSION
ISOLATED TO WIDELY SCATTERED SHOWERS AND STORMS WILL BE POSSIBLE
IN SOUTH-CENTRAL AZ LATER TODAY THROUGH FRIDAY. THE BEST CHANCES
FOR WETTING RAINFALL WILL BE OVER THE HIGHER TERRAIN AREAS OF
EASTERN AND SOUTHEASTERN AZ. AFTERNOON MINIMUM HUMIDITIES WILL
RANGE FROM 7-15% ACROSS SOUTHEAST CA AND BETWEEN 20-35% FOR THE
REMAINDER OF THE REGION THROUGH FRIDAY AND WILL LIKELY INCREASE
ABOVE 25% AREAWIDE THIS WEEKEND. OVERNIGHT RECOVERIES WILL RANGE
FROM POOR ACROSS THE WESTERN DESERTS AND GOOD TO EXCELLENT ACROSS
THE EASTERN DISTRICTS. DAYTIME WINDS WILL REMAIN ELEVATED OUT OF
THE SOUTH TO SOUTHWEST, WITH THE STRONGEST GUSTS IN SOUTHEAST CA
AND ALONG THE LOWER COLORADO RIVER VALLEY PEAKING BETWEEN 20-30
MPH DURING THE AFTERNOON/EARLY EVENING.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-040730-
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-
1224 PM MST THU SEP 3 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR. SLIGHT CHANCE OF
SHOWERS IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS . CHANCE
OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.................74-84.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................51-73 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................94-102.
* 24 HR TREND..................LITTLE CHANGE.
* 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............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......12400 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 13 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................74-84.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................43-58 PCT.
* 24 HR TREND..................12 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
SATURDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................93-101.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................26-31 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST 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...............8 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9100 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 5 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
EXTENDED
SUNDAY
PARTLY CLOUDY. LOWS 76-86. HIGHS 94-103. WEST WINDS
5 TO 15 MPH.
MONDAY
PARTLY CLOUDY. LOWS 77-87. HIGHS 97-105. WEST WINDS
5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 78-88. HIGHS 100-107. WEST WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 79-89. HIGHS 98-105.
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 77-87. HIGHS 95-102.
AZZ131-CAZ231-040730-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1224 PM MST THU SEP 3 2026 /1224 PM PDT THU SEP 3 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................73-79.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................39-50 PCT.
* 24 HR TREND..................14 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................99-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-18 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........9400 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 12 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................75-81.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................35-51 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
SATURDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS . SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................96-101.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................25-29 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............11 PERCENT.
* MIXING HEIGHT FOR YUMA..........4000 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTHWEST 7 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
EXTENDED
SUNDAY
PARTLY CLOUDY. LOWS 76-85. HIGHS 97-103. WEST WINDS
5 TO 15 MPH.
MONDAY
PARTLY CLOUDY. LOWS 78-85. HIGHS 101-106. WEST WINDS
5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 79-85. HIGHS 103-108. WEST WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 80-85. HIGHS 102-107.
THURSDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 79-84. HIGHS 99-104.
AZZ133-040730-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1224 PM MST THU SEP 3 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS . CHANCE
OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.................60-76.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................67-96 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................60 PERCENT.
* CWR (>= 0.10 IN)................30 PERCENT.
* CHANCE OF THUNDER...............22 PERCENT.
FRIDAY
* SKY/WEATHER.....................PARTLY SUNNY. CHANCE OF SHOWERS
IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS . SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................78-94.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................28-44 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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 20 MPH.
* CHANCE OF PRECIP................50 PERCENT.
* CWR (>= 0.10 IN)................30 PERCENT.
* CHANCE OF THUNDER...............16 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................60-77.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................50-78 PCT.
* 24 HR TREND..................18 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING NORTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................82-95.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................25-36 PCT.
* 24 HR TREND..................6 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 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...............2 PERCENT.
EXTENDED
SUNDAY
PARTLY CLOUDY. LOWS 63-80. HIGHS 84-97. WEST WINDS
10 TO 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 64-81. HIGHS 84-99. WEST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 65-81. HIGHS 86-101. SOUTH WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 64-81. HIGHS 84-99.
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 63-80. HIGHS 81-96.
CAZ232-040730-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1224 PM PDT THU SEP 3 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................69-75.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-46 PCT.
* 24 HR TREND..................14 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................93-103.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-15 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................72-79.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................29-43 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS . SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................91-100.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................20-29 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............9 PERCENT.
EXTENDED
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 76-83. HIGHS 90-100. WEST WINDS 5 TO 15 MPH.
MONDAY
PARTLY CLOUDY. LOWS 77-84. HIGHS 95-105. WEST WINDS
5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 78-85. HIGHS 98-107. WEST WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 79-85. HIGHS 97-107.
THURSDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 78-85. HIGHS 95-104.
CAZ230-040730-
JOSHUA TREE NATIONAL PARK-
1224 PM PDT THU SEP 3 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................58-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-45 PCT.
* 24 HR TREND..................14 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................81-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................11-21 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................60-73.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-42 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................80-94.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................22-28 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............7 PERCENT.
EXTENDED
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 64-78. HIGHS 78-92. WEST WINDS 5 TO
15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 64-79. HIGHS 84-97. WEST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 66-81. HIGHS 87-100. WEST WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 68-82. HIGHS 87-100.
THURSDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 66-82. HIGHS 85-98.
8 TO 10 DAY OUTLOOK
FRIDAY SEPTEMBER 11TH THROUGH SUNDAY SEPTEMBER
13TH: NEAR NORMAL TEMPERATURES AND ABOVE MEDIAN PRECIPITATION.
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