404
FNUS55 KPSR 300741
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1241 AM MST WED SEP 30 2026
DISCUSSION
AFTER THE LAST COUPLE DAYS OF ABUNDANT WETTING RAINFALL, DRIER
CONDITIONS WILL RETURN TODAY AS A WEATHER SYSTEM DEPARTS THE
REGION. TEMPERATURES WILL REMAIN WELL BELOW NORMAL ACROSS
SOUTH-CENTRAL AZ AND NEAR NORMAL FOR AREAS ALONG AND WEST OF THE
COLORADO RIVER VALLEY. RELATIVE HUMIDITY WILL BOTTOM OUT AROUND
15-30% ACROSS THE WESTERN DISTRICTS AND REMAIN ABOVE 40% ACROSS
THE EASTERN DISTRICTS TODAY AND THURSDAY. GOOD TO EXCELLENT
OVERNIGHT RECOVERIES CAN BE EXPECTED THROUGH THE REMAINDER OF THIS
WEEK. WINDS WILL RETURN TO LIGHT AND DIURNAL PATTERNS WITH SPEEDS
REMAINING PREDOMINANTLY 10 MPH OR LESS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-301945-
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-
1241 AM MST WED SEP 30 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................79-89.
* 24 HR TREND..................4 DEGREES WARMER.
* MIN HUMIDITY....................30-51 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......6600 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 4 KNOTS.
* DISPERSION FOR PHOENIX..........FAIR.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................61-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................68-92 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................84-92.
* 24 HR TREND..................4 DEGREES WARMER.
* MIN HUMIDITY....................29-44 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING NORTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......4700 FT AGL.
* TRANSPORT WIND FOR PHOENIX......NORTHWEST 3 KNOTS.
* DISPERSION FOR PHOENIX..........MARGINAL.
EXTENDED
FRIDAY
CLEAR. LOWS 65-75. HIGHS 88-96. EAST WINDS 10 TO
20 MPH.
SATURDAY
CLEAR. LOWS 67-77. HIGHS 88-97. EAST WINDS 15 TO
25 MPH.
SUNDAY
CLEAR. LOWS 68-78. HIGHS 89-98. EAST WINDS 15 TO
25 MPH.
MONDAY
CLEAR. LOWS 69-79. HIGHS 89-98.
TUESDAY
MOSTLY CLEAR. LOWS 69-79. HIGHS 91-99.
AZZ131-CAZ231-301945-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1241 AM MST WED SEP 30 2026 /1241 AM PDT WED SEP 30 2026/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-96.
* 24 HR TREND..................9 DEGREES WARMER.
* MIN HUMIDITY....................21-30 PCT.
* 24 HR TREND..................9 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7900 FT AGL.
* TRANSPORT WIND FOR YUMA.........WEST 6 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................63-70.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................68-86 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................93-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................22-28 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING NORTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTHEAST 10 TO 20 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..........6900 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTHEAST 6 KNOTS.
* DISPERSION FOR YUMA.............POOR.
EXTENDED
FRIDAY
CLEAR. LOWS 66-78. HIGHS 97-102. NORTHEAST WINDS 5 TO
15 MPH.
SATURDAY
CLEAR. LOWS 70-78. HIGHS 97-102. EAST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. LOWS 70-79. HIGHS 97-102. EAST WINDS 10 TO
20 MPH.
MONDAY
CLEAR. LOWS 71-79. HIGHS 97-102.
TUESDAY
CLEAR. LOWS 71-78. HIGHS 97-102.
AZZ133-301945-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1241 AM MST WED SEP 30 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS . SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................61-77.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................49-73 PCT.
* 24 HR TREND..................13 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTHWEST 10 TO 20 MPH IN THE
MORNING BECOMING 20 TO 30 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............11 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................48-63.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................79-100 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................73-85.
* 24 HR TREND..................10 DEGREES WARMER.
* MIN HUMIDITY....................38-52 PCT.
* 24 HR TREND..................17 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTHEAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
FRIDAY
CLEAR. LOWS 51-68. HIGHS 74-88. EAST WINDS 10 TO
20 MPH.
SATURDAY
CLEAR. LOWS 52-69. HIGHS 74-88. EAST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. LOWS 52-70. HIGHS 74-89. EAST WINDS 15 TO
25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 53-70. HIGHS 73-88.
TUESDAY
MOSTLY CLEAR. LOWS 53-70. HIGHS 75-90.
CAZ232-301945-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1241 AM PDT WED SEP 30 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................89-99.
* 24 HR TREND..................8 DEGREES WARMER.
* MIN HUMIDITY....................15-22 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................66-74.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................40-78 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................90-99.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................20-27 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHEAST 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.
EXTENDED
FRIDAY
CLEAR. LOWS 69-79. HIGHS 92-101. NORTHEAST WINDS 5 TO
10 MPH.
SATURDAY
CLEAR. LOWS 73-79. HIGHS 92-102. NORTHEAST WINDS 5 TO
15 MPH.
SUNDAY
CLEAR. LOWS 73-80. HIGHS 92-102. NORTHEAST WINDS 5 TO
15 MPH.
MONDAY
CLEAR. LOWS 73-80. HIGHS 91-101.
TUESDAY
CLEAR. LOWS 73-80. HIGHS 93-102.
CAZ230-301945-
JOSHUA TREE NATIONAL PARK-
1241 AM PDT WED SEP 30 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................82-93.
* 24 HR TREND..................12 DEGREES WARMER.
* MIN HUMIDITY....................11-17 PCT.
* 24 HR TREND..................14 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............NORTH 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................62-70.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................27-37 PCT.
* 24 HR TREND..................18 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................83-94.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-22 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING EAST 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.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
FRIDAY
CLEAR. LOWS 64-73. HIGHS 83-95. EAST WINDS 5 TO 15 MPH.
SATURDAY
CLEAR. LOWS 64-74. HIGHS 82-94. SOUTHEAST WINDS 5 TO
15 MPH.
SUNDAY
CLEAR. LOWS 64-74. HIGHS 81-95. EAST WINDS 5 TO 15 MPH.
MONDAY
CLEAR. LOWS 63-74. HIGHS 80-93.
TUESDAY
CLEAR. LOWS 63-74. HIGHS 82-95.
8 TO 10 DAY OUTLOOK
WEDNESDAY OCTOBER 7TH THROUGH FRIDAY OCTOBER
9TH: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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