997
FNUS55 KPSR 261127
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
427 AM MST SUN JUL 26 2026
DISCUSSION
TYPICAL MONSOON CONDITIONS ARE EXPECTED THROUGH AT LEAST THE START
OF THE WORKWEEK, WITH DAILY 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. GUIDANCE
DOES SUPPORT A FEW AFTERNOON SHOWERS AND STORMS OVER A FEW TERRAIN
FAVORED AREAS LIKE IN LA PAZ COUNTY AND THE TABLE TOP AREA OF
SOUTHERN MARICOPA COUNTY. ABOVE NORMAL, TEMPERATURES WILL
CONTRIBUTE TO SEASONALLY DRY AFTERNOON CONDITIONS EACH DAY THROUGH
THE FIRST HALF OF THE WEEK. MINIMUM RH VALUES OF 20-30% 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.
AZZ132-262330-
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-
427 AM MST SUN JUL 26 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................104-110.
* 24 HR TREND..................8 DEGREES COOLER.
* MIN HUMIDITY....................21-26 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 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...............4 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......11000 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 9 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................83-93.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................42-52 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................105-111.
* 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.......10200 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 12 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
TUESDAY
PARTLY CLOUDY. LOWS 82-92. HIGHS 104-110. SOUTHWEST
WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 82-92. HIGHS 105-111. SOUTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 84-94. HIGHS 107-113. SOUTHWEST
WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 85-95. HIGHS 109-115.
SATURDAY
PARTLY CLOUDY. LOWS 85-95. HIGHS 109-115.
AZZ131-CAZ231-262330-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
427 AM MST SUN JUL 26 2026 /427 AM PDT SUN JUL 26 2026/
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................108-113.
* 24 HR TREND..................7 DEGREES COOLER.
* MIN HUMIDITY....................21-26 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
* MIXING HEIGHT FOR YUMA..........7600 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 12 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................84-89.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................41-53 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................108-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................19-23 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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...............1 PERCENT.
* MIXING HEIGHT FOR YUMA..........7100 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 11 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 84-89. HIGHS 108-113. SOUTH WINDS
10 TO 20 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 83-88. HIGHS 108-113. SOUTH WINDS
10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 84-89. HIGHS 110-115. SOUTH WINDS
10 TO 20 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 86-91. HIGHS 112-117.
SATURDAY
MOSTLY CLEAR. LOWS 86-91. HIGHS 113-118.
AZZ133-262330-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
427 AM MST SUN JUL 26 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................91-105.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................23-33 PCT.
* 24 HR TREND..................7 PCT WETTER.
* 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................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................68-85.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................48-73 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............WEST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................91-106.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................22-32 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...............3 PERCENT.
EXTENDED
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 67-85. HIGHS 91-105. WEST WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 67-85. HIGHS 92-106. WEST WINDS
5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 67-85. HIGHS 95-109. WEST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 68-86. HIGHS 96-111.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 68-86. HIGHS 95-110.
CAZ232-262330-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
427 AM PDT SUN JUL 26 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................103-113.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................19-26 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................84-91.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................33-63 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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...............3 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................104-114.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-24 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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
TUESDAY
MOSTLY CLEAR. LOWS 83-90. HIGHS 104-114. SOUTH WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 83-89. HIGHS 104-114. SOUTH WINDS
5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 83-91. HIGHS 106-116. SOUTH WINDS
5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 85-93. HIGHS 107-118.
SATURDAY
MOSTLY CLEAR. LOWS 86-93. HIGHS 108-119.
CAZ230-262330-
JOSHUA TREE NATIONAL PARK-
427 AM PDT SUN JUL 26 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................94-108.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................18-24 PCT.
* 24 HR TREND..................5 PCT WETTER.
* 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...............6 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................76-88.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................31-39 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTH 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................95-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-22 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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...............1 PERCENT.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 74-87. HIGHS 95-108. SOUTHWEST
WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 74-86. HIGHS 95-108. SOUTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 74-87. HIGHS 97-110. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 75-89. HIGHS 99-112.
SATURDAY
MOSTLY CLEAR. LOWS 78-90. HIGHS 100-113.
8 TO 10 DAY OUTLOOK
SUNDAY AUGUST 2ND THROUGH TUESDAY AUGUST
4TH: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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