041
FNUS55 KPSR 231934
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1234 PM MST WED SEP 23 2026
DISCUSSION
TODAY INTO TONIGHT WILL BRING MODEST CHANCES 30-50% FOR SHOWERS
AND THUNDERSTORMS, FOCUSED OVER THE EASTERN DISTRICTS, WHILE THE
WESTERN DISTRICTS SHOULD MOSTLY REMAIN DRY. GUSTY OUTFLOW WINDS
WITH ABRUPT WIND SHIFTS ARE EXPECTED DURING THE FIRST PART OF THE
EVENING, PREDOMINATELY OUT OF THE NE. MINRHS BETWEEN 15-20% RANGE
TODAY FOR THE WESTERN DISTRICTS AND 20-25% THURSDAY, WHILE THE
EASTERN DISTRICTS ARE BETWEEN 25-40% TODAY AND THURSDAY. WINDS
ACROSS EASTERN DISTRICTS WILL GENERALLY MAINTAIN A EAST SOUTHEAST
DIRECTION, FREQUENTLY BECOMING GUSTY WHILE LIGHTER, DIURNALLY
DRIVEN WINDS WILL PERSIST IN WESTERN DISTRICTS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-240745-
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-
1234 PM MST WED SEP 23 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MIN TEMPERATURE.................73-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................49-66 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 10 TO 15 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............9 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................93-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................25-30 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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...............5 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9000 FT AGL.
* TRANSPORT WIND FOR PHOENIX......EAST 4 KNOTS.
* DISPERSION FOR PHOENIX..........FAIR.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................73-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................47-66 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH IN THE
EVENING BECOMING LIGHT AND VARIABLE AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-102.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-27 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHEAST 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.......10500 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 3 KNOTS.
* DISPERSION FOR PHOENIX..........FAIR.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 75-85. HIGHS 96-104. SOUTHEAST
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
72-82. HIGHS 91-99. SOUTHEAST WINDS 5 TO 15 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 68-79. HIGHS 88-96. SOUTH WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
68-78. HIGHS 89-97.
WEDNESDAY
MOSTLY CLEAR. LOWS 68-78. HIGHS 91-98.
AZZ131-CAZ231-240745-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1234 PM MST WED SEP 23 2026 /1234 PM PDT WED SEP 23 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................74-79.
* 24 HR TREND..................6 DEGREES WARMER.
* MAX HUMIDITY....................46-60 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING EAST 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................98-103.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................22-26 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............7 PERCENT.
* MIXING HEIGHT FOR YUMA..........9400 FT AGL.
* TRANSPORT WIND FOR YUMA.........EAST 4 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................75-80.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................45-54 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
EVENING BECOMING NORTHEAST AFTER MIDNIGHT.
* 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...............3 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................99-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-22 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 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...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........11400 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 6 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 76-83. HIGHS 100-105. SOUTH WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 73-83. HIGHS 96-101. SOUTH WINDS
5 TO 15 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
69-80. HIGHS 93-98. SOUTHWEST WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
68-75. HIGHS 94-99.
WEDNESDAY
MOSTLY CLEAR. LOWS 68-77. HIGHS 95-100.
AZZ133-240745-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1234 PM MST WED SEP 23 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY IN THE EVENING
BECOMING PARTLY CLOUDY AFTER MIDNIGHT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING BECOMING SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS AFTER MIDNIGHT.
* MIN TEMPERATURE.................55-73.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................64-96 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................40 PERCENT.
* CWR (>= 0.10 IN)................20 PERCENT.
* CHANCE OF THUNDER...............34 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................77-94.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................28-43 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............18 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR. SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. SLIGHT CHANCE OF SHOWERS .
* MIN TEMPERATURE.................55-72.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................65-96 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............21 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................77-94.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................26-42 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH 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...............4 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 57-76. HIGHS 81-97. EAST WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 59-76. HIGHS 79-93. EAST WINDS 5 TO 10 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 55-74. HIGHS 74-89. EAST WINDS 5 TO
15 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 52-70. HIGHS 74-89.
WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 52-71. HIGHS 76-91.
CAZ232-240745-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1234 PM PDT WED SEP 23 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................74-80.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................31-60 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING EAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............EAST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................93-102.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................20-29 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 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.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................75-82.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................41-58 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING NORTHWEST AFTER MIDNIGHT.
* 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...............1 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-26 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 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.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 77-83. HIGHS 95-105. SOUTH WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 71-82. HIGHS 90-100. SOUTHWEST
WINDS 5 TO 15 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
69-78. HIGHS 87-98. WEST WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
69-76. HIGHS 89-99.
WEDNESDAY
MOSTLY CLEAR. LOWS 70-77. HIGHS 90-100.
CAZ230-240745-
JOSHUA TREE NATIONAL PARK-
1234 PM PDT WED SEP 23 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................65-75.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................30-37 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE EVENING
BECOMING WEST AFTER MIDNIGHT.
* 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...............1 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................83-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-28 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHEAST IN THE AFTERNOON.
* 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.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................66-76.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................44-54 PCT.
* 24 HR TREND..................16 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................84-97.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-29 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH 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...............0 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 64-78. HIGHS 83-97. SOUTHWEST
WINDS 10 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 58-77. HIGHS 78-92. SOUTHWEST WINDS
5 TO 15 MPH.
MONDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 58-71.
HIGHS 75-89. NORTHWEST WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
58-70. HIGHS 77-90.
WEDNESDAY
CLEAR. LOWS 60-72. HIGHS 79-92.
8 TO 10 DAY OUTLOOK
THURSDAY OCTOBER 1ST THROUGH SATURDAY OCTOBER
3RD: ABOVE NORMAL TEMPERATURES AND ABOVE MEDIAN PRECIPITATION.
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