796
FNUS55 KPSR 251921
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1221 PM MST FRI SEP 25 2026
DISCUSSION
MUCH DRIER AIR SETTLING INTO THE REGION WILL RESULT IN QUIET
WEATHER AND NEAR ZERO RAIN CHANCES THROUGH SATURDAY ALONG WITH
NEAR TO SLIGHTLY ABOVE NORMAL TEMPERATURES. RAIN CHANCES WILL
INCREASE ONCE AGAIN STARTING SUNDAY AS MOISTURE LEVELS INCREASE.
MINRHS TODAY WILL BOTTOM OUT BETWEEN 25-45% ACROSS THE EASTERN
DISTRICTS AND 15-25% ACROSS THE WESTERN DISTRICTS BEFORE DROPPING
FURTHER TO 15-25% IN MOST AREAS ON SATURDAY. BY SUNDAY, MINRHS
INCREASE TO ABOVE 20% AREA WIDE. WINDS WILL GENERALLY FOLLOW THE
TYPICAL DIURNAL TENDENCIES WITH LIMITED TO NO AFTERNOON GUSTS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-260730-
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-
1221 PM MST FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................71-81.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................44-65 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..LIGHT AND VARIABLE IN THE EVENING
BECOMING MOSTLY DOWNSLOPE/DOWNVALLEY AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................94-101.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-23 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH IN THE AFTERNOON.
* 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.
* MIXING HEIGHT FOR PHOENIX.......10200 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 3 KNOTS.
* DISPERSION FOR PHOENIX..........FAIR.
SATURDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................74-84.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................36-51 PCT.
* 24 HR TREND..................12 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE EVENING
BECOMING SOUTHEAST AFTER MIDNIGHT.
* 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 CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................90-97.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................23-29 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............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......3300 FT AGL.
* TRANSPORT WIND FOR PHOENIX......NORTH 5 KNOTS.
* DISPERSION FOR PHOENIX..........POOR.
EXTENDED
MONDAY
NOT AS WARM. MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. LOWS 63-76. HIGHS 82-90. EAST
WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 63-73. HIGHS 82-90. NORTHWEST WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 63-73. HIGHS 86-95. NORTHEAST WINDS 5 TO
10 MPH.
THURSDAY
CLEAR. LOWS 65-75. HIGHS 90-98.
FRIDAY
MOSTLY CLEAR. LOWS 68-78. HIGHS 92-99.
AZZ131-CAZ231-260730-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1221 PM MST FRI SEP 25 2026 /1221 PM PDT FRI SEP 25 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................72-77.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................45-58 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................99-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................16-20 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........10600 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 8 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
SATURDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................76-81.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................36-48 PCT.
* 24 HR TREND..................9 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH IN THE EVENING
BECOMING 15 TO 25 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................93-98.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................22-28 PCT.
* 24 HR TREND..................8 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 IN THE MORNING BECOMING
20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
* MIXING HEIGHT FOR YUMA..........8500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 10 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 63-78. HIGHS 87-93. SOUTHWEST WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
63-71. HIGHS 89-94. NORTHWEST WINDS 10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 64-72. HIGHS 94-99. NORTH WINDS 5 TO
10 MPH.
THURSDAY
CLEAR. LOWS 66-75. HIGHS 96-101.
FRIDAY
MOSTLY CLEAR. LOWS 68-75. HIGHS 97-102.
AZZ133-260730-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1221 PM MST FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................55-72.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................60-84 PCT.
* 24 HR TREND..................9 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE EVENING
BECOMING NORTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................79-95.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................21-30 PCT.
* 24 HR TREND..................13 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................58-74.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................45-66 PCT.
* 24 HR TREND..................17 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 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...............1 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................77-92.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................25-37 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
EXTENDED
MONDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 55-72. HIGHS 71-85. EAST WINDS 5 TO 15 MPH.
TUESDAY
SHOWERS AND CHANCE OF THUNDERSTORMS. LOWS 50-67. HIGHS
67-81. SOUTH WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 50-66. HIGHS 70-85. NORTH WINDS 5 TO 10 MPH.
THURSDAY
CLEAR. LOWS 50-69. HIGHS 75-89.
FRIDAY
MOSTLY CLEAR. LOWS 54-70. HIGHS 77-91.
CAZ232-260730-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1221 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................74-81.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................37-57 PCT.
* 24 HR TREND..................14 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................93-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-23 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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.
SATURDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................77-83.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................29-45 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING WEST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH IN THE EVENING
BECOMING 15 TO 25 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................88-98.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................19-27 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
EXTENDED
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 65-77. HIGHS 82-93. SOUTHWEST WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 65-74. HIGHS 84-95. NORTHWEST WINDS
10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 67-75. HIGHS 89-99. NORTHWEST WINDS 5 TO
15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 68-76. HIGHS 91-101.
FRIDAY
MOSTLY CLEAR. LOWS 70-76. HIGHS 91-101.
CAZ230-260730-
JOSHUA TREE NATIONAL PARK-
1221 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................64-75.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................37-46 PCT.
* 24 HR TREND..................20 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...............1 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................82-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-25 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
SATURDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................65-77.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................31-38 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH IN THE EVENING
BECOMING 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................77-91.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................22-29 PCT.
* 24 HR TREND..................4 PCT WETTER.
* 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...............2 PERCENT.
EXTENDED
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS 56-70. HIGHS
71-84. SOUTHWEST WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
56-68. HIGHS 73-86. NORTHWEST WINDS 15 TO 25 MPH.
WEDNESDAY
CLEAR. LOWS 59-70. HIGHS 80-92. NORTHWEST WINDS 5 TO
15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 61-71. HIGHS 81-94.
FRIDAY
MOSTLY CLEAR. LOWS 61-71. HIGHS 80-93.
8 TO 10 DAY OUTLOOK
SATURDAY OCTOBER 3RD THROUGH MONDAY
OCTOBER 5TH: ABOVE NORMAL TEMPERATURES AND ABOVE MEDIAN
PRECIPITATION.
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