178
FNUS55 KPSR 012028
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
128 PM MST THU OCT 1 2026
DISCUSSION
DRIER CONDITIONS ARE EXPECTED TO LAST THROUGH THE WEEKEND, WITH
PERSISTENT CLEAR SKIES AS A HIGH PRESSURE SYSTEM SETS UP OVER THE
REGION. NEAR NORMAL TEMPERATURES ARE EXPECTED WITH THE WARMEST
TEMPERATURES CONSISTENTLY ACROSS THE WESTERN DISTRICTS. MINRHS
WILL MOSTLY RANGE FROM 15-25% OVER THE WESTERN DISTRICTS TO 25-35%
FOR THE EASTERN DISTRICTS WITH GOOD TO EXCELLENT OVERNIGHT
RECOVERIES. AFTER LIGHT WINDS TODAY, BREEZY EAST WINDS WILL SET UP
TONIGHT INTO FRIDAY AND PERSIST FOR SEVERAL DAYS. MORNING WIND
GUSTS OF 20-30 MPH WILL BE COMMON STARTING FRIDAY.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-020830-
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-
128 PM MST THU OCT 1 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................68-78.
* 24 HR TREND..................6 DEGREES WARMER.
* MAX HUMIDITY....................51-68 PCT.
* 24 HR TREND..................14 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..LIGHT AND VARIABLE IN THE EVENING
BECOMING EAST 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............EAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................87-95.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................23-32 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* 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.
* MIXING HEIGHT FOR PHOENIX.......8800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......EAST 10 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................68-78.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................48-66 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHEAST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................86-93.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................25-35 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 10 TO 20 MPH.
* WINDS...10000 FT MSL............EAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......7000 FT AGL.
* TRANSPORT WIND FOR PHOENIX......EAST 14 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
SUNDAY
CLEAR. LOWS 69-79. HIGHS 89-98. EAST WINDS 15 TO
25 MPH.
MONDAY
CLEAR. LOWS 71-81. HIGHS 87-96. EAST WINDS 15 TO
25 MPH.
TUESDAY
CLEAR. LOWS 70-80. HIGHS 89-98. NORTHEAST WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 70-80. HIGHS 93-101.
THURSDAY
CLEAR. LOWS 72-82. HIGHS 94-102.
AZZ131-CAZ231-020830-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
128 PM MST THU OCT 1 2026 /128 PM PDT THU OCT 1 2026/
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................69-77.
* 24 HR TREND..................5 DEGREES WARMER.
* MAX HUMIDITY....................48-63 PCT.
* 24 HR TREND..................17 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..LIGHT AND VARIABLE IN THE EVENING
BECOMING NORTHEAST 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............EAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................95-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................20-25 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........9600 FT AGL.
* TRANSPORT WIND FOR YUMA.........EAST 13 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................72-79.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................42-57 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................93-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................22-26 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........8000 FT AGL.
* TRANSPORT WIND FOR YUMA.........EAST 18 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
EXTENDED
SUNDAY
CLEAR. LOWS 73-81. HIGHS 96-101. NORTHEAST WINDS 10 TO
20 MPH.
MONDAY
CLEAR. LOWS 74-81. HIGHS 95-100. NORTHEAST WINDS 15 TO
25 MPH.
TUESDAY
CLEAR. LOWS 73-80. HIGHS 97-102. NORTH WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 73-80. HIGHS 99-104.
THURSDAY
CLEAR. LOWS 73-81. HIGHS 100-105.
AZZ133-020830-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
128 PM MST THU OCT 1 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................52-69.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................61-86 PCT.
* 24 HR TREND..................13 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................74-88.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................29-44 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHEAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................51-68.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................61-84 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHEAST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................73-87.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................32-49 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SUNDAY
CLEAR. LOWS 53-72. HIGHS 74-88. EAST WINDS 15 TO
25 MPH.
MONDAY
CLEAR. LOWS 55-72. HIGHS 73-87. EAST WINDS 15 TO
25 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 55-71. HIGHS 75-88. EAST WINDS
10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 55-72. HIGHS 78-93.
THURSDAY
CLEAR. LOWS 55-72. HIGHS 78-93.
CAZ232-020830-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
128 PM PDT THU OCT 1 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................71-78.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................36-56 PCT.
* 24 HR TREND..................13 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH.
* WINDS...10000 FT MSL............EAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................90-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................19-29 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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...............0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................72-80.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................43-58 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................89-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-31 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SUNDAY
CLEAR. LOWS 74-82. HIGHS 91-100. NORTHEAST WINDS 5 TO
15 MPH.
MONDAY
CLEAR. LOWS 75-82. HIGHS 90-100. NORTHEAST WINDS 5 TO
15 MPH.
TUESDAY
CLEAR. LOWS 75-82. HIGHS 92-102. NORTH WINDS 5 TO
10 MPH.
WEDNESDAY
CLEAR. LOWS 75-82. HIGHS 94-104.
THURSDAY
CLEAR. LOWS 76-82. HIGHS 95-104.
CAZ230-020830-
JOSHUA TREE NATIONAL PARK-
128 PM PDT THU OCT 1 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................64-73.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................36-45 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH.
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 MPH IN THE
EVENING BECOMING SOUTHEAST 10 TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................82-94.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................24-32 PCT.
* 24 HR TREND..................11 PCT WETTER.
* 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...............0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................64-74.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................48-61 PCT.
* 24 HR TREND..................13 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH.
* WINDS...10000 FT MSL............EAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................80-93.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................25-34 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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...............0 PERCENT.
EXTENDED
SUNDAY
CLEAR. LOWS 64-75. HIGHS 81-94. EAST WINDS 10 TO
20 MPH.
MONDAY
CLEAR. LOWS 65-75. HIGHS 80-93. NORTHEAST WINDS 5 TO
15 MPH.
TUESDAY
CLEAR. LOWS 65-75. HIGHS 82-95. NORTH WINDS 5 TO
10 MPH.
WEDNESDAY
CLEAR. LOWS 65-76. HIGHS 84-97.
THURSDAY
CLEAR. LOWS 66-76. HIGHS 85-97.
8 TO 10 DAY OUTLOOK
FRIDAY OCTOBER 9TH THROUGH SUNDAY OCTOBER
11TH: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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