416
FNUS55 KPSR 080935
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
235 AM MST SAT AUG 8 2026
DISCUSSION
SHOWER AND THUNDERSTORM ACTIVITY WILL BE MAINLY CONFINED TO THE
HIGHER TERRAIN AREAS OF THE EASTERN DISTRICTS THROUGHOUT THE
WEEKEND, WITH A LESS THAN 20% CHANCE OF ACTIVITY IMPACTING THE
LOWER ELEVATIONS. MINRHS WILL BOTTOM OUT BETWEEN 15-25% TODAY AND
INCREASE SLIGHTLY ON SUNDAY CLOSER TO 20-25% AREAWIDE ALONG WITH
FAIR TO GOOD OVERNIGHT RECOVERIES. OUTSIDE OF THUNDERSTORM INDUCED
OUTFLOWS, THE OVERALL WIND PATTERN WILL FOLLOW THE TYPICAL
DIURNAL TENDENCIES WITH SOME MODEST AFTERNOON UPSLOPE GUSTS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-082145-
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-
235 AM MST SAT AUG 8 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................108-114.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-19 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............EAST 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...............3 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......8900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 4 KNOTS.
* DISPERSION FOR PHOENIX..........MARGINAL.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................84-94.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................38-47 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING SOUTH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............NORTH 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................106-112.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-24 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......11300 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 5 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
EXTENDED
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 79-89. HIGHS 103-109. SOUTHWEST WINDS 5 TO
15 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 78-88. HIGHS 99-105. SOUTH WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 76-86. HIGHS 97-104. SOUTH WINDS
5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 76-86. HIGHS 95-104.
FRIDAY
MOSTLY CLEAR. LOWS 76-86. HIGHS 97-105.
AZZ131-CAZ231-082145-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
235 AM MST SAT AUG 8 2026 /235 AM PDT SAT AUG 8 2026/
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................110-115.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................15-19 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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...............2 PERCENT.
* MIXING HEIGHT FOR YUMA..........9500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 7 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................85-90.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................40-54 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................108-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-26 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7600 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 12 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
MONDAY
MOSTLY CLEAR. LOWS 83-88. HIGHS 105-110. SOUTH WINDS
10 TO 20 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 81-86. HIGHS 102-107. SOUTH WINDS 10 TO
20 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 79-85. HIGHS 102-107. SOUTH WINDS 5 TO
15 MPH.
THURSDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 78-83. HIGHS 101-106.
FRIDAY
MOSTLY CLEAR. LOWS 78-83. HIGHS 101-106.
AZZ133-082145-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
235 AM MST SAT AUG 8 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................93-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-25 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 MPH IN THE
MORNING BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............12 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................67-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................45-61 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE EVENING
BECOMING SOUTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............9 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................93-107.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-25 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
EXTENDED
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 64-83. HIGHS 90-104. WEST WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 64-79. HIGHS 86-100. WEST WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 62-78. HIGHS 83-97. WEST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 61-76. HIGHS 80-95.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 61-78. HIGHS 83-97.
CAZ232-082145-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
235 AM PDT SAT AUG 8 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................105-114.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................14-20 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...............2 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................85-91.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................30-56 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................104-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-26 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING SOUTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
MONDAY
MOSTLY CLEAR. LOWS 82-89. HIGHS 101-111. SOUTH WINDS
10 TO 20 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 80-87. HIGHS 98-108. SOUTH WINDS 10 TO
20 MPH.
WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 79-86. HIGHS 98-107. SOUTH WINDS 10 TO
20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 78-84. HIGHS 96-105.
FRIDAY
MOSTLY CLEAR. LOWS 78-83. HIGHS 96-105.
CAZ230-082145-
JOSHUA TREE NATIONAL PARK-
235 AM PDT SAT AUG 8 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................96-109.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................14-19 PCT.
* 24 HR TREND..................5 PCT DRIER.
* 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...............2 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................75-88.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................27-35 PCT.
* 24 HR TREND..................9 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................95-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................16-22 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
MONDAY
MOSTLY CLEAR. LOWS 72-87. HIGHS 92-106. SOUTHWEST WINDS
10 TO 20 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 70-85. HIGHS 89-102. SOUTH WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 68-83. HIGHS 88-102. SOUTHWEST WINDS 5 TO
15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 66-81. HIGHS 87-100.
FRIDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 66-79. HIGHS 86-99.
8 TO 10 DAY OUTLOOK
SATURDAY AUGUST 15TH THROUGH MONDAY AUGUST
17TH: NEAR NORMAL TEMPERATURES AND ABOVE MEDIAN PRECIPITATION.
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