102
FNUS55 KPSR 292022
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
122 PM MST WED JUL 29 2026
DISCUSSION
STRONG HIGH PRESSURE WILL GRADUALLY BUILD OVER THE REGION THROUGH
THE REST OF THE WEEK WHILE DRIER AIR ALSO MOVES IN FROM THE
SOUTHWEST. THESE TWO FACTORS WILL SEVERELY LIMIT MONSOON SHOWERS
AND THUNDERSTORMS AS VERY LITTLE ACTIVITY IS EXPECTED THROUGH AT
LEAST FRIDAY. EXPECT HUMIDITIES TO GRADUALLY LOWER OVER THE NEXT
COUPLE OF DAYS WITH MINRHS SETTLING AT 5-15% BY FRIDAY, WHILE
FALLING OVERNIGHT RHS OFFER ONLY LITTLE TO MODEST RELIEF. RECORD
TO NEAR RECORD TEMPERATURES ARE ALSO FORECAST FOR FRIDAY AND
THROUGH THE UPCOMING WEEKEND. WINDS WILL MOSTLY FOLLOW DIURNAL
PATTERNS, BUT WEST SOUTHWESTERLY WINDS WILL BE DOMINANT MUCH OF
THE TIME WITH AFTERNOON GUSTS OF 15-20 MPH AT TIMES.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-300830-
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-
122 PM MST WED JUL 29 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................81-91.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................27-37 PCT.
* 24 HR TREND..................15 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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...............1 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................107-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-16 PCT.
* 24 HR TREND..................5 PCT DRIER.
* 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.
* MIXING HEIGHT FOR PHOENIX.......10900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 7 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................81-91.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................25-33 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................109-115.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................11-15 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......7800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 13 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 82-92. HIGHS 110-116. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 82-92. HIGHS 109-115. SOUTHWEST
WINDS 10 TO 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 82-92. HIGHS 107-113. SOUTHWEST
WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 82-92. HIGHS 105-112.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 80-90. HIGHS 103-109.
AZZ131-CAZ231-300830-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
122 PM MST WED JUL 29 2026 /122 PM PDT WED JUL 29 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................81-86.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................29-38 PCT.
* 24 HR TREND..................15 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 5 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.................109-114.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-16 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........8100 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 7 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................79-84.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................28-41 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* 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...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................111-116.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................9-16 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.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7300 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 7 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 81-86. HIGHS 114-119. SOUTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
CLEAR. LOWS 82-87. HIGHS 112-118. SOUTH WINDS 10 TO
20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 83-88. HIGHS 109-115. SOUTH WINDS
10 TO 20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 83-88. HIGHS 108-114.
WEDNESDAY
MOSTLY CLEAR. LOWS 82-87. HIGHS 106-111.
AZZ133-300830-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
122 PM MST WED JUL 29 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................67-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................38-63 PCT.
* 24 HR TREND..................13 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING NORTHWEST 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...............2 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................95-109.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................14-20 PCT.
* 24 HR TREND..................7 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...............1 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................67-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-50 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING NORTH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................97-111.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-18 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 69-85. HIGHS 97-112. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 68-85. HIGHS 95-111. SOUTHWEST WINDS 5 TO
15 MPH.
MONDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 68-85. HIGHS 94-109. SOUTHWEST WINDS 10 TO
20 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 66-85. HIGHS 93-107.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 64-83. HIGHS 89-104.
CAZ232-300830-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
122 PM PDT WED JUL 29 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................81-87.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................19-33 PCT.
* 24 HR TREND..................17 PCT DRIER.
* 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...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................103-113.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................9-14 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.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................80-86.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................16-37 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................105-116.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................7-13 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.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 82-89. HIGHS 109-119. SOUTH WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
CLEAR. LOWS 82-89. HIGHS 108-118. SOUTH WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 82-89. HIGHS 106-116. SOUTH WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 82-89. HIGHS 105-115.
WEDNESDAY
MOSTLY CLEAR. LOWS 82-89. HIGHS 102-112.
CAZ230-300830-
JOSHUA TREE NATIONAL PARK-
122 PM PDT WED JUL 29 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................71-84.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................18-24 PCT.
* 24 HR TREND..................15 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................8-12 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH IN THE AFTERNOON.
* 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.
THURSDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................72-82.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................14-20 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................96-110.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................7-11 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 74-86. HIGHS 99-114. WEST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
CLEAR. LOWS 73-86. HIGHS 98-112. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 73-86. HIGHS 97-111. SOUTHWEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
CLEAR. LOWS 73-86. HIGHS 96-110.
WEDNESDAY
MOSTLY CLEAR. LOWS 73-86. HIGHS 94-107.
8 TO 10 DAY OUTLOOK
THURSDAY AUGUST 6TH THROUGH SATURDAY
AUGUST 8TH:
ABOVE NORMAL TEMPERATURES AND ABOVE MEDIAN PRECIPITATION.
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