500
FNUS55 KPSR 131025
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
325 AM MST SAT SEP 13 2025
DISCUSSION
NEAR TO SLIGHTLY BELOW AVERAGE TEMPERATURES AND DRY CONDITIONS,
WITH NO SHOWERS OR STORMS, ARE EXPECTED THIS WEEKEND. SOME
AFTERNOON BREEZINESS IS ANTICIPATED TODAY IN WESTERN DISTRICTS,
WITH PEAK GUSTS UP TO 20-25 MPH. OTHERWISE, WINDS WILL BE LIGHT
AND FOLLOW TYPICAL DIURNAL TENDENCIES. MINIMUM RH VALUES THIS
WEEKEND WILL BE AROUND 15-20%, WITH FAIR OVERNIGHT RECOVERIES
AROUND 30-50%.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-132230-
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-
325 AM MST SAT SEP 13 2025
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................92-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-16 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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.......8900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 5 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................67-77.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-61 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTHEAST AFTER MIDNIGHT.
* 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................93-99.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-18 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* 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 PHOENIX.......9300 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 7 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
EXTENDED
MONDAY
CLEAR. LOWS 69-79. HIGHS 95-102. SOUTH WINDS 5 TO
10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 72-82. HIGHS 98-104. WEST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 74-84. HIGHS 98-103. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 75-85. HIGHS 94-101.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 74-84. HIGHS 92-99.
AZZ131-CAZ231-132230-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
325 AM MST SAT SEP 13 2025 /325 AM PDT SAT SEP 13 2025/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-99.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-17 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* 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.
* MIXING HEIGHT FOR YUMA..........7600 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTH 4 KNOTS.
* DISPERSION FOR YUMA.............POOR.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................67-73.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................43-71 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................95-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................16-21 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 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..........7700 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 5 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
EXTENDED
MONDAY
CLEAR. LOWS 67-76. HIGHS 97-102. SOUTH WINDS 5 TO
10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 69-79. HIGHS 99-104. SOUTH WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 73-81. HIGHS 99-104. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 74-81. HIGHS 95-100.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 74-81. HIGHS 93-98.
AZZ133-132230-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
325 AM MST SAT SEP 13 2025
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................78-93.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-23 PCT.
* 24 HR TREND..................16 PCT DRIER.
* 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 20 TO 30 MPH IN THE
MORNING BECOMING 10 TO 20 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................53-69.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-59 PCT.
* 24 HR TREND..................18 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING EAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................80-95.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................14-22 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* 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
MONDAY
MOSTLY CLEAR. LOWS 56-74. HIGHS 84-99. EAST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 59-75. HIGHS 84-100. EAST WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 59-77. HIGHS 85-100. EAST WINDS
5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 60-77. HIGHS 83-98.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 60-76. HIGHS 81-96.
CAZ232-132230-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
325 AM PDT SAT SEP 13 2025
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................90-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-19 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* 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.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................69-76.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................32-66 PCT.
* 24 HR TREND..................LITTLE RH 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................14-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 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.
EXTENDED
MONDAY
CLEAR. LOWS 69-77. HIGHS 92-100. SOUTH WINDS 5 TO
10 MPH.
TUESDAY
CLEAR. LOWS 72-81. HIGHS 94-103. SOUTHWEST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 75-81. HIGHS 95-103. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 75-81. HIGHS 90-99.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 74-81. HIGHS 88-97.
CAZ230-132230-
JOSHUA TREE NATIONAL PARK-
325 AM PDT SAT SEP 13 2025
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................80-92.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................15-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHEAST IN THE AFTERNOON.
* WINDS...10000 FT MSL............NORTH 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................62-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................36-45 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING NORTHWEST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................81-94.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-21 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.
EXTENDED
MONDAY
CLEAR. LOWS 62-72. HIGHS 82-95. SOUTHWEST WINDS 5 TO
15 MPH.
TUESDAY
CLEAR. LOWS 64-75. HIGHS 84-97. SOUTHWEST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 66-76. HIGHS 85-98. WEST WINDS
5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 65-76. HIGHS 81-94.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 63-75. HIGHS 79-91.
8 TO 10 DAY OUTLOOK
SATURDAY SEPTEMBER 20TH THROUGH MONDAY SEPTEMBER
22ND: NEAR TO ABOVE NORMAL TEMPERATURES AND NEAR TO ABOVE MEDIAN
PRECIPITATION.
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