732
FNUS55 KPSR 262140
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
240 PM MST SAT SEP 26 2026
DISCUSSION
DRY CONDITIONS WILL PREVAIL THROUGH THE REMAINDER OF TODAY AHEAD
OF INCREASING CLOUD COVER AND RAIN CHANCES FOR THE END OF THE
WEEKEND AND THE START OF NEXT WEEK. MINRH VALUES WILL BE AT THEIR
LOWEST THIS AFTERNOON, RANGING BETWEEN 15-25% REGIONWIDE, BEFORE
INCREASING EACH DAY TOWARD 25-50% BY MONDAY. MAXRHS WILL FOLLOW A
SIMILAR TREND, INCREASING FROM DECENT TO EXCELLENT OVER THE NEXT
FEW DAYS. WINDS WILL FOLLOW LIGHT AND DIURNAL TRENDS THROUGH THE
REMAINDER OF THE WEEKEND. SOME MARGINAL BREEZINESS IS EXPECTED TO
DEVELOP ACROSS PORTIONS OF THE WESTERN DISTRICTS BY MONDAY.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-270945-
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-
240 PM MST SAT SEP 26 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................74-84.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................32-46 PCT.
* 24 HR TREND..................14 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTHEAST 5 TO 10 MPH 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...............1 PERCENT.
SUNDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................91-97.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................22-28 PCT.
* 24 HR TREND..................6 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
20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............9 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......6900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......NORTH 5 KNOTS.
* DISPERSION FOR PHOENIX..........FAIR.
SUNDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MIN TEMPERATURE.................71-81.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................57-72 PCT.
* 24 HR TREND..................24 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH IN THE
EVENING BECOMING 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............11 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS.
* MAX TEMPERATURE.................83-92.
* 24 HR TREND..................7 DEGREES COOLER.
* MIN HUMIDITY....................39-52 PCT.
* 24 HR TREND..................20 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................50 PERCENT.
* CWR (>= 0.10 IN)................40 PERCENT.
* CHANCE OF THUNDER...............15 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......3800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 6 KNOTS.
* DISPERSION FOR PHOENIX..........POOR.
EXTENDED
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 63-73. HIGHS 81-90. NORTH WINDS 5 TO
15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 63-73. HIGHS 84-93. NORTH WINDS
5 TO 10 MPH.
THURSDAY
CLEAR. LOWS 66-76. HIGHS 90-99. EAST WINDS 5 TO
10 MPH.
FRIDAY
CLEAR. LOWS 69-79. HIGHS 92-101.
SATURDAY
MOSTLY CLEAR. LOWS 70-80. HIGHS 94-102.
AZZ131-CAZ231-270945-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
240 PM MST SAT SEP 26 2026 /240 PM PDT SAT SEP 26 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MIN TEMPERATURE.................76-81.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................33-45 PCT.
* 24 HR TREND..................8 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* 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.................93-98.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................23-29 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................10 PERCENT IN THE MORNING
BECOMING 20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............7 PERCENT.
* MIXING HEIGHT FOR YUMA..........4200 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 10 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
SUNDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. SLIGHT CHANCE OF SHOWERS .
* MIN TEMPERATURE.................72-77.
* 24 HR TREND..................4 DEGREES COOLER.
* MAX HUMIDITY....................58-71 PCT.
* 24 HR TREND..................24 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............9 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY. CHANCE OF SHOWERS .
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................89-94.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................31-38 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................40 PERCENT.
* CWR (>= 0.10 IN)................30 PERCENT.
* CHANCE OF THUNDER...............12 PERCENT.
* MIXING HEIGHT FOR YUMA..........6200 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 14 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
TUESDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 64-72. HIGHS 89-94. NORTH WINDS 10 TO
20 MPH.
WEDNESDAY
CLEAR. LOWS 64-73. HIGHS 93-98. NORTH WINDS 5 TO
15 MPH.
THURSDAY
CLEAR. LOWS 66-75. HIGHS 97-102. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
CLEAR. LOWS 68-77. HIGHS 98-103.
SATURDAY
CLEAR. LOWS 70-77. HIGHS 99-104.
AZZ133-270945-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
240 PM MST SAT SEP 26 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................57-75.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................40-57 PCT.
* 24 HR TREND..................23 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING NORTHEAST AFTER MIDNIGHT.
* 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.
SUNDAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................78-93.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................22-32 PCT.
* 24 HR TREND..................3 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 10 TO 20 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............8 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS .
* MIN TEMPERATURE.................59-72.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................63-83 PCT.
* 24 HR TREND..................24 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 5 TO 15 MPH IN THE
EVENING BECOMING 15 TO 25 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................40 PERCENT.
* CWR (>= 0.10 IN)................20 PERCENT.
* CHANCE OF THUNDER...............15 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SHOWERS LIKELY AND
SLIGHT CHANCE OF THUNDERSTORMS.
* MAX TEMPERATURE.................71-85.
* 24 HR TREND..................8 DEGREES COOLER.
* MIN HUMIDITY....................45-62 PCT.
* 24 HR TREND..................27 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 20 TO 30 MPH.
* CHANCE OF PRECIP................60 PERCENT.
* CWR (>= 0.10 IN)................60 PERCENT.
* CHANCE OF THUNDER...............21 PERCENT.
EXTENDED
TUESDAY
SHOWERS AND CHANCE OF THUNDERSTORMS. LOWS 50-67. HIGHS
65-80. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 50-66. HIGHS 68-83. NORTHEAST WINDS
5 TO 15 MPH.
THURSDAY
CLEAR. LOWS 50-70. HIGHS 75-89. NORTHEAST WINDS 5 TO
15 MPH.
FRIDAY
CLEAR. LOWS 53-71. HIGHS 75-91.
SATURDAY
CLEAR. LOWS 54-73. HIGHS 77-93.
CAZ232-270945-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
240 PM PDT SAT SEP 26 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MIN TEMPERATURE.................77-82.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................28-43 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH.
* CHANCE OF PRECIP................10 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.................88-98.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................20-28 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................10 PERCENT IN THE MORNING
BECOMING 20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS.
* MIN TEMPERATURE.................71-78.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................55-73 PCT.
* 24 HR TREND..................29 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH IN THE
EVENING BECOMING 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY. CHANCE OF SHOWERS .
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................84-95.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................23-34 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............8 PERCENT.
EXTENDED
TUESDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 65-74. HIGHS
84-96. NORTHWEST WINDS 10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 67-76. HIGHS 90-100. NORTHWEST WINDS
5 TO 15 MPH.
THURSDAY
CLEAR. LOWS 69-77. HIGHS 92-102. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
CLEAR. LOWS 71-78. HIGHS 93-103.
SATURDAY
CLEAR. LOWS 72-78. HIGHS 93-103.
CAZ230-270945-
JOSHUA TREE NATIONAL PARK-
240 PM PDT SAT SEP 26 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MIN TEMPERATURE.................65-77.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................28-35 PCT.
* 24 HR TREND..................11 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.
SUNDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................77-91.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................22-28 PCT.
* 24 HR TREND..................5 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
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE EVENING.
* MIN TEMPERATURE.................59-72.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................58-72 PCT.
* 24 HR TREND..................33 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................20 PERCENT IN THE EVENING
BECOMING 10 PERCENT AFTER MIDNIGHT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS IN THE MORNING BECOMING CHANCE OF SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.................73-86.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................27-34 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH IN THE
MORNING BECOMING 15 TO 25 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................20 PERCENT.
* CHANCE OF THUNDER...............8 PERCENT.
EXTENDED
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
56-69. HIGHS 74-86. NORTHWEST WINDS 15 TO 25 MPH.
WEDNESDAY
CLEAR. LOWS 59-71. HIGHS 81-93. NORTHWEST WINDS
10 TO 20 MPH.
THURSDAY
CLEAR. LOWS 61-72. HIGHS 83-95. SOUTHWEST WINDS 5 TO
10 MPH.
FRIDAY
CLEAR. LOWS 62-72. HIGHS 82-96.
SATURDAY
CLEAR. LOWS 62-73. HIGHS 83-96.
8 TO 10 DAY OUTLOOK
SUNDAY OCTOBER 4TH THROUGH TUESDAY OCTOBER
6TH:
ABOVE NORMAL TEMPERATURES AND NEAR TO ABOVE MEDIAN PRECIPITATION.
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