965  
FNUS55 KPSR 041131  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
431 AM MST FRI JUL 4 2025  
   
DISCUSSION  
 
NEAR TO BELOW-NORMAL TEMPERATURES WILL PERSIST INTO THE START OF  
THE WEEKEND, WITH ABOVE-NORMAL READINGS RETURNING BY SUNDAY. SOME  
LINGERING MOISTURE WILL RESULT IN RELATIVELY ELEVATED MINRH  
VALUES WITH READINGS BETWEEN 20-25% IN THE EASTERN DISTRICTS AND  
15-20% IN THE WESTERN ZONES. OVERNIGHT RECOVERIES TONIGHT WILL  
OFFER SOME DECENT RELIEF AS READINGS HOVER BETWEEN 40-60%.  
HOWEVER, DRIER AIR WILL RESULT IN DECREASING RH VALUES FOR  
SATURDAY, WITH DAILY MINIMUMS GENERALLY BETWEEN 10-20% AND MAX  
VALUES HOVERING AROUND 25-35%. WINDS WILL FOLLOW FAMILIAR DIURNAL  
TRENDS, WITH TYPICAL AFTERNOON BREEZINESS. SLIGHTLY MORE ELEVATED  
GUSTS (20-25 MPH) CAN BE ANTICIPATED ALONG THE LOWER COLORADO  
RIVER VALLEY.  
 
   
..THUNDERSTORMS IMPLY GUSTY WINDS  
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-042345-  
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-  
431 AM MST FRI JUL 4 2025  
   
TODAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................98-104.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................18-25 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.......11000 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 9 KNOTS.  
* DISPERSION FOR PHOENIX..........VERY GOOD.  
   
TONIGHT  
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................75-85.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................46-62 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* 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.  
   
SATURDAY  
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................100-107.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................15-20 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHWEST 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.  
* MIXING HEIGHT FOR PHOENIX.......10600 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 6 KNOTS.  
* DISPERSION FOR PHOENIX..........GOOD.  
 
   
EXTENDED  
   
SUNDAY  
MOSTLY CLEAR. LOWS 78-88. HIGHS 104-111. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
MONDAY  
MOSTLY CLEAR. LOWS 80-90. HIGHS 105-112. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY  
MOSTLY CLEAR. LOWS 80-90. HIGHS 106-112. SOUTHWEST  
WINDS 5 TO 15 MPH.    
WEDNESDAY  
MOSTLY CLEAR. LOWS 83-93. HIGHS 108-114.    
THURSDAY  
MOSTLY CLEAR. LOWS 82-92. HIGHS 107-113.  
 
 
 
AZZ131-CAZ231-042345-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
431 AM MST FRI JUL 4 2025 /431 AM PDT FRI JUL 4 2025/  
   
TODAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................102-107.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................15-21 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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..........8700 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTH 14 KNOTS.  
* DISPERSION FOR YUMA.............EXCELLENT.  
   
TONIGHT  
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................74-79.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................54-74 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 5 TO 15 MPH IN THE EVENING  
BECOMING LIGHT AND VARIABLE AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* CHANCE OF THUNDER...............0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................104-109.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................14-18 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...............0 PERCENT.  
* MIXING HEIGHT FOR YUMA..........9800 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTH 7 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
 
   
EXTENDED  
   
SUNDAY  
MOSTLY CLEAR. LOWS 75-83. HIGHS 107-112. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
MONDAY  
MOSTLY CLEAR. LOWS 78-83. HIGHS 107-112. SOUTH WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY  
MOSTLY CLEAR. LOWS 79-86. HIGHS 108-113. SOUTH WINDS  
5 TO 15 MPH.    
WEDNESDAY  
MOSTLY CLEAR. LOWS 82-87. HIGHS 111-116.    
THURSDAY  
MOSTLY CLEAR. LOWS 82-87. HIGHS 110-116.  
 
 
 
AZZ133-042345-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
431 AM MST FRI JUL 4 2025  
   
TODAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................84-99.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................18-26 PCT.  
* 24 HR TREND..................8 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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...............3 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................60-78.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................44-62 PCT.  
* 24 HR TREND..................11 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* CHANCE OF THUNDER...............0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................88-102.  
* 24 HR TREND..................4 DEGREES WARMER.  
* MIN HUMIDITY....................15-22 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 5 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* CHANCE OF THUNDER...............0 PERCENT.  
 
   
EXTENDED  
   
SUNDAY  
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 63-82. HIGHS 92-107. NORTHWEST WINDS 5 TO  
15 MPH.    
MONDAY  
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 66-83. HIGHS 94-108. WEST WINDS 5 TO 15 MPH.    
TUESDAY  
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 67-84. HIGHS 95-109. WEST WINDS 5 TO 15 MPH.    
WEDNESDAY  
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 67-84. HIGHS 96-111.    
THURSDAY  
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 66-84. HIGHS 95-108.  
 
 
 
CAZ232-042345-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
431 AM PDT FRI JUL 4 2025  
   
TODAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................97-108.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................11-17 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.  
   
TONIGHT  
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................73-79.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................29-66 PCT.  
* 24 HR TREND..................6 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.  
   
SATURDAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................99-109.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................9-15 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.  
 
   
EXTENDED  
   
SUNDAY  
CLEAR. LOWS 75-84. HIGHS 102-112. WEST WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY  
MOSTLY CLEAR. LOWS 78-85. HIGHS 102-112. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY  
MOSTLY CLEAR. LOWS 79-90. HIGHS 103-113. SOUTH WINDS  
5 TO 15 MPH.    
WEDNESDAY  
MOSTLY CLEAR. LOWS 83-92. HIGHS 106-116.    
THURSDAY  
MOSTLY CLEAR. LOWS 83-92. HIGHS 107-116.  
 
 
 
CAZ230-042345-  
JOSHUA TREE NATIONAL PARK-  
431 AM PDT FRI JUL 4 2025  
   
TODAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................86-101.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................12-19 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.  
   
TONIGHT  
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................63-74.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................24-32 PCT.  
* 24 HR TREND..................10 PCT DRIER.  
* 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.  
   
SATURDAY  
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................89-103.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................7-11 PCT.  
* 24 HR TREND..................6 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTH 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.  
 
   
EXTENDED  
   
SUNDAY  
CLEAR. LOWS 65-79. HIGHS 91-105. WEST WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY  
MOSTLY CLEAR. LOWS 69-81. HIGHS 92-106. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY  
MOSTLY CLEAR. LOWS 70-86. HIGHS 94-107. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
WEDNESDAY  
MOSTLY CLEAR. LOWS 74-88. HIGHS 97-111.    
THURSDAY  
MOSTLY CLEAR. LOWS 75-88. HIGHS 98-112.  
 
 
   
8 TO 10 DAY OUTLOOK  
FRIDAY JULY 11TH THROUGH SUNDAY JULY 13TH:  
ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.  
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