866
FNUS55 KPSR 082026
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
126 PM MST WED APR 8 2026
DISCUSSION
DRY CONDITIONS AND ABOVE AVERAGE TEMPERATURES WILL PREVAIL THROUGH
FRIDAY. HUMIDITY LEVELS WILL BE FAIRLY TYPICAL FOR THE SPRING WITH
AFTERNOON READINGS MOSTLY FALLING INTO A 10-15% RANGE FOLLOWING
POOR TO FAIR OVERNIGHT RECOVERY OF 20-40%. WINDS WILL OBTAIN SOME
INCREASED GUSTINESS IN THE AFTERNOON WITH SPEEDS HIGHEST ON
FRIDAY WHERE 20-30 MPH UPSLOPE GUSTS MAY DEVELOP, SPEEDS WILL ALSO
BE ENHANCED ACROSS FAR WESTERN DISTRICTS OF SE CALIFORNIA.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-090830-
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-
126 PM MST WED APR 8 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................59-69.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................24-37 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
THURSDAY
* SKY/WEATHER.....................SUNNY IN THE MORNING BECOMING
PARTLY SUNNY IN THE AFTERNOON.
* MAX TEMPERATURE.................89-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-14 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......11400 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 14 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
THURSDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................60-70.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................32-46 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................85-93.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................12-17 PCT.
* 24 HR TREND..................3 PCT WETTER.
* 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.
* MIXING HEIGHT FOR PHOENIX.......10500 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 12 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 52-65. HIGHS 79-86. SOUTHWEST
WINDS 10 TO 20 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 48-58. HIGHS 75-83. SOUTHWEST WINDS
10 TO 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 46-56. HIGHS 71-78. WEST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 46-58. HIGHS 77-84.
WEDNESDAY
PARTLY CLOUDY. LOWS 51-62. HIGHS 83-89.
AZZ131-CAZ231-090830-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
126 PM MST WED APR 8 2026 /126 PM PDT WED APR 8 2026/
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................59-65.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-48 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 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.................90-95.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................11-15 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.
* MIXING HEIGHT FOR YUMA..........10100 FT AGL.
* TRANSPORT WIND FOR YUMA.........WEST 12 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
THURSDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................62-68.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................40-56 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.
FRIDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................87-92.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................16-20 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.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........10900 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 13 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 52-63. HIGHS 81-86. WEST WINDS
15 TO 25 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 49-58. HIGHS 78-83. WEST WINDS 15 TO
25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 47-55. HIGHS 75-80. WEST WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 47-57. HIGHS 80-85.
WEDNESDAY
PARTLY CLOUDY. LOWS 50-60. HIGHS 85-90.
AZZ133-090830-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
126 PM MST WED APR 8 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................48-63.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................26-41 PCT.
* 24 HR TREND..................6 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 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................77-91.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-14 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST 5 TO 15 MPH IN THE AFTERNOON.
* 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.
THURSDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................50-63.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................28-40 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING EAST AFTER MIDNIGHT.
* 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.
FRIDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................75-88.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................11-18 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST 5 TO 15 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
42-63. HIGHS 68-82. SOUTH WINDS 15 TO 25 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40-56. HIGHS 64-79. SOUTHWEST WINDS
15 TO 25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 34-54. HIGHS 58-72. SOUTHWEST WINDS
10 TO 20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 34-53. HIGHS 63-77.
WEDNESDAY
MOSTLY CLEAR. LOWS 38-58. HIGHS 69-84.
CAZ232-090830-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
126 PM PDT WED APR 8 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................61-69.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-46 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................85-95.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................11-18 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.
THURSDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................62-68.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................36-54 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* 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.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................82-91.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................16-23 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH IN THE
MORNING BECOMING 25 TO 35 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 52-64. HIGHS 74-84. WEST WINDS
15 TO 25 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 49-60. HIGHS 69-79. SOUTHWEST WINDS
15 TO 25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49-57. HIGHS 69-79. WEST WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 50-61. HIGHS 76-85.
WEDNESDAY
PARTLY CLOUDY. LOWS 53-64. HIGHS 80-89.
CAZ230-090830-
JOSHUA TREE NATIONAL PARK-
126 PM PDT WED APR 8 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................52-63.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................35-46 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTH 10 TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................73-88.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................12-23 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* 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.
THURSDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................50-61.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................39-59 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTHWEST 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................70-85.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................18-29 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 40-56. HIGHS 62-77. SOUTHWEST
WINDS 15 TO 25 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 36-52. HIGHS 55-72. SOUTHWEST WINDS
15 TO 25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 36-51. HIGHS 58-72. WEST WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 39-56. HIGHS 66-79.
WEDNESDAY
PARTLY CLOUDY. LOWS 45-59. HIGHS 70-83.
8 TO 10 DAY OUTLOOK
THURSDAY APRIL 16TH THROUGH SATURDAY APRIL
18TH: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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