686
FNUS55 KPSR 300736
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1236 AM MST SUN AUG 30 2026
DISCUSSION
ELEVATED MOISTURE AND RAIN CHANCES WILL PERSIST ACROSS THE EASTERN
DISTRICTS THROUGH MONDAY WITH GUSTY WINDS, HEAVY RAINFALL, AND
LOCALIZED FLOODING STILL A THREAT. THE WESTERN DISTRICTS WILL
GENERALLY STAY DRY WITH AT MOST A FEW ISOLATED SHOWERS AND STORMS.
EXPECT MINRHS OF 15-20% ACROSS THE WESTERN DISTRICTS TO 25-40%
OVER THE EASTERN DISTRICTS BEFORE DRYING OUT AGAIN BEGINNING
TUESDAY. TEMPERATURES WILL RANGE FROM AROUND NORMAL OVER WESTERN
DISTRICTS TO SLIGHTLY BELOW NORMAL OVER THE EASTERN DISTRICTS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-301945-
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-
1236 AM MST SUN AUG 30 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................99-106.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................26-32 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT WEST PORTION...10
PERCENT EAST PORTION.
* CHANCE OF THUNDER...............14 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......4600 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 13 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. PATCHY BLOWING
DUST IN THE EVENING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT.
* MIN TEMPERATURE.................75-85.
* 24 HR TREND..................4 DEGREES COOLER.
* MAX HUMIDITY....................55-79 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE EVENING
BECOMING EAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT WEST PORTION...50
PERCENT EAST PORTION.
* CHANCE OF THUNDER...............27 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MAX TEMPERATURE.................94-103.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................24-40 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 15 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT WEST PORTION...20
PERCENT EAST PORTION.
* CHANCE OF THUNDER...............25 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......7100 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 9 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 73-83. HIGHS 96-103. SOUTH WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 76-86. HIGHS 98-105. SOUTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 77-87. HIGHS 99-106. SOUTHWEST
WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 77-87. HIGHS 98-105.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 77-87. HIGHS 97-103.
AZZ131-CAZ231-301945-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1236 AM MST SUN AUG 30 2026 /1236 AM PDT SUN AUG 30 2026/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................104-109.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................20-27 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
* MIXING HEIGHT FOR YUMA..........8800 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 9 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................80-85.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................41-55 PCT.
* 24 HR TREND..................6 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................101-106.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................19-24 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
* MIXING HEIGHT FOR YUMA..........8700 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 8 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 78-83. HIGHS 100-105. SOUTH WINDS
10 TO 20 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 78-83. HIGHS 101-106. SOUTHWEST
WINDS 10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 78-84. HIGHS 102-107. SOUTH WINDS
10 TO 20 MPH.
FRIDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 79-84. HIGHS 101-106.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 79-84. HIGHS 99-104.
AZZ133-301945-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1236 AM MST SUN AUG 30 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MAX TEMPERATURE.................85-100.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................28-39 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................50 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............47 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT. CHANCE OF THUNDERSTORMS IN
THE EVENING. CHANCE OF SHOWERS . SLIGHT CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT.
* MIN TEMPERATURE.................63-76.
* 24 HR TREND..................4 DEGREES COOLER.
* MAX HUMIDITY....................70-90 PCT.
* 24 HR TREND..................13 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING NORTH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTHWEST 10 TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................60 PERCENT.
* CWR (>= 0.10 IN)................50 PERCENT.
* CHANCE OF THUNDER...............48 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. CHANCE OF SHOWERS
AND THUNDERSTORMS.
* MAX TEMPERATURE.................80-94.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................36-51 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST 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................60 PERCENT.
* CWR (>= 0.10 IN)................50 PERCENT.
* CHANCE OF THUNDER...............50 PERCENT.
EXTENDED
TUESDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 60-77. HIGHS 83-97. NORTHWEST WINDS 5 TO
15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 62-78. HIGHS 85-100. NORTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 62-78. HIGHS 86-101. NORTHWEST
WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 64-78. HIGHS 86-99.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 64-79. HIGHS 86-100.
CAZ232-301945-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1236 AM PDT SUN AUG 30 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................100-110.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................15-22 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................78-84.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................30-43 PCT.
* 24 HR TREND..................6 PCT DRIER.
* 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.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................96-106.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................14-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 75-83. HIGHS 95-105. SOUTHWEST
WINDS 10 TO 20 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 76-83. HIGHS 95-105. WEST WINDS
10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 76-84. HIGHS 97-106. SOUTHWEST
WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 78-84. HIGHS 97-106.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 78-84. HIGHS 95-104.
CAZ230-301945-
JOSHUA TREE NATIONAL PARK-
1236 AM PDT SUN AUG 30 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................88-103.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................16-23 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................65-80.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................31-40 PCT.
* 24 HR TREND..................6 PCT DRIER.
* 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.
MONDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................84-99.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................15-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 61-77. HIGHS 83-98. SOUTHWEST WINDS
10 TO 20 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 62-77. HIGHS 83-98. WEST WINDS
10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 62-79. HIGHS 85-101. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 65-80. HIGHS 86-101.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 66-80. HIGHS 85-98.
8 TO 10 DAY OUTLOOK
SUNDAY SEPTEMBER 6TH THROUGH TUESDAY
SEPTEMBER 8TH: ABOVE NORMAL TEMPERATURES AND ABOVE MEDIAN
PRECIPITATION.
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