397
FNUS55 KPSR 270759
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1259 AM MST MON JUL 27 2026
DISCUSSION
TYPICAL MONSOON CONDITIONS ARE EXPECTED THROUGH AT LEAST THE START
OF THE WORKWEEK, WITH THUNDERSTORM ACTIVITY MAINLY FAVORING THE
HIGH TERRAIN OF NORTHERN AZ AND SOUTHEASTERN AZ AND LOW CHANCES
(10%) IN THE LOWER DESERTS OF SOUTH-CENTRAL AZ. ABOVE NORMAL
TEMPERATURES WILL CONTRIBUTE TO SEASONALLY DRY AFTERNOON CONDITIONS
EACH DAY THROUGH THE FIRST HALF OF THE WEEK. MINIMUM RH VALUES OF
15-30% WILL BE COMMON, WITH FAIR OVERNIGHT RECOVERIES MOST NIGHTS
- MAXIMUM RH VALUES MOSTLY IN THE 35-50% ACROSS LOWER DESERTS TO
45-65% ACROSS SOUTHERN GILA COUNTY. OUTSIDE OF THUNDERSTORM
OUTFLOWS, WIND SPEEDS SHOULD BE FAIRLY LIGHT THROUGH THE PERIOD
WITH ONLY LOCAL AFTERNOON GUSTS 20-25 MPH.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-272000-
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-
1259 AM MST MON JUL 27 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................105-112.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................20-24 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...............2 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......10400 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 12 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................83-93.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................39-50 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 EAST 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
TUESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE MORNING.
* MAX TEMPERATURE.................104-111.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................19-23 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 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...............6 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......8700 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 11 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 82-92. HIGHS 106-112. SOUTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 84-94. HIGHS 108-114. SOUTHWEST
WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 85-95. HIGHS 110-116. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 85-95. HIGHS 110-116.
SUNDAY
MOSTLY CLEAR. LOWS 85-95. HIGHS 108-114.
AZZ131-CAZ231-272000-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1259 AM MST MON JUL 27 2026 /1259 AM PDT MON JUL 27 2026/
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................108-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................20-24 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
* MIXING HEIGHT FOR YUMA..........7500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 12 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................83-88.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................39-51 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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...............1 PERCENT.
TUESDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................108-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-23 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 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..........7100 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 10 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 83-88. HIGHS 109-114. SOUTH WINDS
10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 84-89. HIGHS 111-116. SOUTH WINDS
5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 86-91. HIGHS 113-118. SOUTH WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 86-91. HIGHS 113-119.
SUNDAY
MOSTLY CLEAR. LOWS 86-91. HIGHS 111-117.
AZZ133-272000-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1259 AM MST MON JUL 27 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-106.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-32 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING NORTHWEST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............8 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................67-85.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................46-73 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............7 PERCENT.
TUESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MAX TEMPERATURE.................91-106.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-32 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............11 PERCENT.
EXTENDED
WEDNESDAY
PARTLY CLOUDY. LOWS 67-86. HIGHS 93-107. WEST WINDS
5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 68-86. HIGHS 95-110. WEST WINDS
5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 69-87. HIGHS 98-112. WEST WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 69-87. HIGHS 96-111.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 68-86. HIGHS 94-109.
CAZ232-272000-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1259 AM PDT MON JUL 27 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................104-115.
* 24 HR TREND..................5 DEGREES WARMER.
* MIN HUMIDITY....................18-24 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................83-89.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................29-52 PCT.
* 24 HR TREND..................8 PCT DRIER.
* 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...............2 PERCENT.
TUESDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................104-114.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................14-22 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* 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.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 82-88. HIGHS 104-114. SOUTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 83-90. HIGHS 106-116. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 84-93. HIGHS 108-118. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 86-93. HIGHS 109-120.
SUNDAY
MOSTLY CLEAR. LOWS 86-92. HIGHS 108-118.
CAZ230-272000-
JOSHUA TREE NATIONAL PARK-
1259 AM PDT MON JUL 27 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................95-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-24 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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...............2 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................73-86.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................28-35 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............1 PERCENT.
TUESDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................94-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................14-18 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 72-85. HIGHS 94-108. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
MOSTLY CLEAR. LOWS 73-87. HIGHS 97-111. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 75-89. HIGHS 100-114. WEST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 79-90. HIGHS 101-115.
SUNDAY
MOSTLY CLEAR. LOWS 78-90. HIGHS 99-113.
8 TO 10 DAY OUTLOOK
MONDAY AUGUST 3RD THROUGH WEDNESDAY AUGUST
5TH: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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