980
FNUS55 KPSR 230907
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
207 AM 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. MINRHS WILL FALL INTO A 15-20% RANGE TODAY FOR THE
WESTERN DISTRICTS AND 20-25% THURSDAY, WHILE THE EASTERN DISTRICTS
WILL FALL TO 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.
AZZ132-232115-
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-
207 AM MST WED SEP 23 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................93-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................20-29 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 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...............3 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......7900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHEAST 3 KNOTS.
* DISPERSION FOR PHOENIX..........MARGINAL.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. PATCHY BLOWING
DUST IN THE EVENING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS .
* MIN TEMPERATURE.................73-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................46-62 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING EAST 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT WEST PORTION...10
PERCENT EAST PORTION.
* CHANCE OF THUNDER...............20 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................93-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................23-28 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...............2 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......8500 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 3 KNOTS.
* DISPERSION FOR PHOENIX..........MARGINAL.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 72-82. HIGHS 94-102. EAST WINDS 5 TO
15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 74-84. HIGHS 96-104. SOUTHEAST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 71-81. HIGHS 92-99. SOUTHEAST WINDS 5 TO
15 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 67-77. HIGHS 88-96.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
67-77. HIGHS 89-96.
AZZ131-CAZ231-232115-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
207 AM MST WED SEP 23 2026 /207 AM PDT WED SEP 23 2026/
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................97-102.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................16-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHEAST 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..........9700 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 6 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................72-77.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................45-60 PCT.
* 24 HR TREND..................17 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 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...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................98-103.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-25 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............EAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
* MIXING HEIGHT FOR YUMA..........9300 FT AGL.
* TRANSPORT WIND FOR YUMA.........EAST 5 KNOTS.
* DISPERSION FOR YUMA.............MARGINAL.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 72-79. HIGHS 99-104. SOUTHEAST WINDS
5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 74-79. HIGHS 100-105. SOUTH WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
70-79. HIGHS 96-101. SOUTH WINDS 10 TO 20 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
67-77. HIGHS 93-98.
TUESDAY
MOSTLY CLEAR. LOWS 67-74. HIGHS 93-98.
AZZ133-232115-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
207 AM MST WED SEP 23 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................74-92.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................28-49 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 5 TO 15 MPH IN THE MORNING
BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
30 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............31 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY IN THE EVENING
BECOMING PARTLY CLOUDY AFTER MIDNIGHT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS .
* MIN TEMPERATURE.................54-73.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................59-90 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................40 PERCENT.
* CWR (>= 0.10 IN)................20 PERCENT.
* CHANCE OF THUNDER...............32 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MAX TEMPERATURE.................78-94.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................25-42 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............12 PERCENT.
EXTENDED
FRIDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 56-74.
HIGHS 78-94. EAST WINDS 10 TO 20 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 57-75. HIGHS 81-97. EAST WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 59-75. HIGHS 79-94. EAST WINDS 5 TO 15 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 56-73. HIGHS 74-89.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 54-70. HIGHS 74-89.
CAZ232-232115-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
207 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................93-102.
* 24 HR TREND..................4 DEGREES WARMER.
* MIN HUMIDITY....................12-18 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHEAST 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.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................73-79.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-62 PCT.
* 24 HR TREND..................13 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................93-102.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................19-27 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHEAST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 74-81. HIGHS 94-104. SOUTHWEST WINDS
5 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 74-81. HIGHS 95-105. SOUTH WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 69-80. HIGHS 90-100. SOUTHWEST
WINDS 10 TO 20 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
68-75. HIGHS 87-97.
TUESDAY
MOSTLY CLEAR. LOWS 68-74. HIGHS 88-98.
CAZ230-232115-
JOSHUA TREE NATIONAL PARK-
207 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................82-94.
* 24 HR TREND..................4 DEGREES WARMER.
* MIN HUMIDITY....................15-19 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING EAST 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.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................64-74.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-38 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................82-95.
* 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............EAST 5 TO 15 MPH IN THE MORNING
BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 64-77. HIGHS 83-96. SOUTHWEST WINDS
5 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 62-77. HIGHS 83-97. SOUTHWEST
WINDS 10 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 57-75. HIGHS 78-93. SOUTHWEST WINDS
10 TO 20 MPH.
MONDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 57-69.
HIGHS 76-89.
TUESDAY
MOSTLY CLEAR. LOWS 57-68. HIGHS 77-90.
8 TO 10 DAY OUTLOOK
WEDNESDAY SEPTEMBER 30TH THROUGH FRIDAY
OCTOBER 2ND: ABOVE NORMAL TEMPERATURES AND ABOVE MEDIAN
PRECIPITATION.
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