064
FNUS55 KPSR 162133
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
233 PM MST TUE SEP 16 2025
DISCUSSION
ABOVE AVERAGE TEMPERATURES WILL CONTINUE TODAY AND WEDNESDAY.
INCREASING MOISTURE AND CLOUD COVER WILL RESULTING IN COOLER
TEMPERATURES FOR THE LATTER HALF OF THIS WEEK. RAIN CHANCES WILL
INCREASE TO AROUND 20-30% ACROSS THE REGION ON WEDNESDAY WITH MUCH
BETTER CHANCES FOR WETTING RAINFALL ARRIVING ON THURSDAY. MINRHS
THIS AFTERNOON WILL FALL TO AROUND 20% BEFORE STEADILY INCREASING
TO AROUND 40% LATE THIS WEEK. OUTSIDE OF ANY STORMS, WILL REMAIN
LIGHT OVER THE NEXT FEW DAYS WITH DIRECTIONS MOSTLY FOLLOWING
DIURNAL TRENDS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-171000-
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-
233 PM MST TUE SEP 16 2025
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................98-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-26 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............4 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9500 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 8 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................75-85.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................47-65 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING SOUTH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MAX TEMPERATURE.................94-101.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................21-34 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING EAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............20 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......6500 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 14 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 74-84. HIGHS 90-96. SOUTHWEST WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 73-83. HIGHS 90-97. SOUTH WINDS 5 TO
10 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 73-83. HIGHS 92-99. SOUTHWEST WINDS 5 TO
10 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 73-83. HIGHS 94-100.
MONDAY
MOSTLY CLEAR. LOWS 73-83. HIGHS 96-102.
AZZ131-CAZ231-171000-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
233 PM MST TUE SEP 16 2025 /233 PM PDT TUE SEP 16 2025/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................99-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-32 PCT.
* 24 HR TREND..................10 PCT WETTER.
* 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...............6 PERCENT.
* MIXING HEIGHT FOR YUMA..........8100 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 6 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................74-83.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................56-74 PCT.
* 24 HR TREND..................7 PCT WETTER.
* 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...............5 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MAX TEMPERATURE.................96-102.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................24-37 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............22 PERCENT.
* MIXING HEIGHT FOR YUMA..........2800 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 13 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
EXTENDED
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 74-81. HIGHS 91-96. SOUTH WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 74-80. HIGHS 92-97. SOUTH WINDS 5 TO
15 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 74-79. HIGHS 94-99. SOUTH WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 74-81. HIGHS 96-101.
MONDAY
MOSTLY CLEAR. LOWS 72-81. HIGHS 97-102.
AZZ133-171000-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
233 PM MST TUE SEP 16 2025
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................84-101.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-27 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING WEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............11 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.................60-77.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................48-75 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE EVENING
BECOMING EAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 MPH.
* CHANCE OF PRECIP................10 PERCENT IN THE EVENING
BECOMING 0 PERCENT AFTER MIDNIGHT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............12 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................82-98.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................20-32 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................10 PERCENT IN THE MORNING
BECOMING 20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............21 PERCENT.
EXTENDED
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 59-77. HIGHS 78-93. SOUTHEAST WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 58-74. HIGHS 77-92. SOUTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 57-74. HIGHS 80-94. SOUTHWEST WINDS 5 TO
15 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 57-74. HIGHS 81-96.
MONDAY
MOSTLY CLEAR. LOWS 57-75. HIGHS 84-98.
CAZ232-171000-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
233 PM PDT TUE SEP 16 2025
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................96-104.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-30 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 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...............4 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................77-83.
* 24 HR TREND..................4 DEGREES WARMER.
* MAX HUMIDITY....................41-72 PCT.
* 24 HR TREND..................9 PCT WETTER.
* 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.
WEDNESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS .
* MAX TEMPERATURE.................92-101.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................22-37 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 10 TO 20 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............21 PERCENT.
EXTENDED
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 73-82. HIGHS 85-94. SOUTHWEST WINDS 5 TO
15 MPH.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 73-79. HIGHS 87-95. WEST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 73-79. HIGHS 89-98. WEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 74-81. HIGHS 91-99.
MONDAY
MOSTLY CLEAR. LOWS 75-81. HIGHS 91-100.
CAZ230-171000-
JOSHUA TREE NATIONAL PARK-
233 PM PDT TUE SEP 16 2025
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................86-99.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................16-26 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHEAST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 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...............3 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................67-77.
* 24 HR TREND..................3 DEGREES WARMER.
* MAX HUMIDITY....................41-50 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING NORTHWEST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING NORTHEAST 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................84-97.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................21-32 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............EAST 10 TO 15 MPH.
* CHANCE OF PRECIP................10 PERCENT IN THE MORNING
BECOMING 20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............14 PERCENT.
EXTENDED
THURSDAY
NOT AS WARM. MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 61-78. HIGHS 74-87. SOUTHWEST WINDS 5 TO
15 MPH.
FRIDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 60-73. HIGHS 74-88. SOUTHWEST WINDS 5 TO
15 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 60-73. HIGHS 78-91. WEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 62-75. HIGHS 81-94.
MONDAY
MOSTLY CLEAR. LOWS 63-75. HIGHS 80-93.
8 TO 10 DAY OUTLOOK
TUESDAY SEPTEMBER 23RD THROUGH THURSDAY
SEPTEMBER 25TH: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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