441
FNUS55 KPSR 090804
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
104 AM MST FRI OCT 9 2026
DISCUSSION
DRY CONDITIONS ALONG WITH WELL-ABOVE NORMAL TEMPERATURES WILL
CONTINUE TODAY AS LOWER DESERT HIGHS REACHING INTO THE TRIPLE
DIGITS. AFTERNOON MINRHS TODAY WILL RANGE BETWEEN 15-25%. WINDS
TODAY WILL REMAIN MOSTLY LIGHT ACROSS MUCH OF THE AREA. A MUCH
MORE UNSETTLED WEATHER PATTERN THEN DEVELOPS OVER THE WEEKEND AS
INCREASING MOISTURE ASSOCIATED WITH THE REMNANTS OF TROPICAL STORM
RACHEL BRINGS INCREASING RAIN CHANCES. THE CHANCES FOR SHOWERS
AND STORMS INCREASE STARTING SATURDAY AFTERNOON/EVENING AND
CONTINUES INTO SUNDAY WITH A GREATER THAN 50-70% CHANCE OF
WETTING RAINFALL AREA WIDE. WINDS WILL ALSO INCREASE
SIGNIFICANTLY, ESPECIALLY LATE SATURDAY NIGHT THROUGH SUNDAY WITH
WIDESPREAD GUSTS EXCEEDING 30-40 MPH. WITH THE INCREASING MOISTURE
AND COOLER TEMPERATURES, MINRH VALUES WILL INCREASE FROM 25-40%
SATURDAY TO 45-70% ON SUNDAY ALONG WITH GOOD TO EXCELLENT
OVERNIGHT RECOVERIES.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-092015-
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-
104 AM MST FRI OCT 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................96-103.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................16-20 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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...............2 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......15000 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 6 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................73-83.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................43-57 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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...............3 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS . CHANCE
OF SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................86-93.
* 24 HR TREND..................10 DEGREES COOLER.
* MIN HUMIDITY....................31-39 PCT.
* 24 HR TREND..................16 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH IN THE MORNING
BECOMING 25 TO 35 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............18 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......3600 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 7 KNOTS.
* DISPERSION FOR PHOENIX..........MARGINAL.
EXTENDED
SUNDAY
NOT AS WARM. BREEZY. SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 60-73. HIGHS 75-85. SOUTH WINDS 20 TO 30 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 54-68. HIGHS 71-80. SOUTH WINDS 10 TO
20 MPH.
TUESDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 50-63. HIGHS
68-75. WEST WINDS 5 TO 15 MPH.
WEDNESDAY
CLEAR. LOWS 50-60. HIGHS 71-78.
THURSDAY
CLEAR. LOWS 53-63. HIGHS 76-83.
AZZ131-CAZ231-092015-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
104 AM MST FRI OCT 9 2026 /104 AM PDT FRI OCT 9 2026/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................100-105.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................14-18 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............SOUTH 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
* MIXING HEIGHT FOR YUMA..........11500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 7 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................74-79.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................45-58 PCT.
* 24 HR TREND..................15 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH IN THE EVENING
BECOMING 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.................90-95.
* 24 HR TREND..................10 DEGREES COOLER.
* MIN HUMIDITY....................27-32 PCT.
* 24 HR TREND..................14 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 25 TO 35 MPH.
* CHANCE OF PRECIP................10 PERCENT IN THE MORNING
BECOMING 20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............13 PERCENT.
* MIXING HEIGHT FOR YUMA..........5500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 23 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
EXTENDED
SUNDAY
NOT AS WARM. WINDY. SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS 60-75. HIGHS 80-85. SOUTH WINDS 25 TO 35 MPH.
MONDAY
PARTLY CLOUDY. LOWS 53-67. HIGHS 75-81. SOUTHWEST WINDS
10 TO 20 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 51-61. HIGHS 73-78. WEST WINDS
10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 51-61. HIGHS 77-82.
THURSDAY
CLEAR. LOWS 54-65. HIGHS 81-86.
AZZ133-092015-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
104 AM MST FRI OCT 9 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................79-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................19-29 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................59-75.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................45-63 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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.
SATURDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS .
* MAX TEMPERATURE.................75-89.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................30-43 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH IN THE MORNING
BECOMING SOUTH 5 TO 10 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............20 PERCENT.
EXTENDED
SUNDAY
NOT AS WARM. SHOWERS AND CHANCE OF THUNDERSTORMS. LOWS
53-69. HIGHS 68-82. SOUTH WINDS 15 TO 25 MPH.
MONDAY
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 50-66.
HIGHS 63-76. SOUTH WINDS 10 TO 20 MPH.
TUESDAY
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS.
LOWS 42-62. HIGHS 59-72. SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 42-56. HIGHS 62-74.
THURSDAY
CLEAR. LOWS 42-60. HIGHS 66-78.
CAZ232-092015-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
104 AM PDT FRI OCT 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................95-105.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-19 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 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...............1 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................74-80.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-51 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH IN THE EVENING
BECOMING 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................85-96.
* 24 HR TREND..................10 DEGREES COOLER.
* MIN HUMIDITY....................23-32 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............9 PERCENT.
EXTENDED
SUNDAY
NOT AS WARM. WINDY. PARTLY CLOUDY WITH CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 58-73. HIGHS
75-86. SOUTHWEST WINDS 25 TO 35 MPH.
MONDAY
MOSTLY CLEAR. LOWS 53-64. HIGHS 68-79. SOUTHWEST WINDS
15 TO 25 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 53-59. HIGHS 68-79. WEST WINDS
10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 53-64. HIGHS 73-84.
THURSDAY
CLEAR. LOWS 57-67. HIGHS 78-89.
CAZ230-092015-
JOSHUA TREE NATIONAL PARK-
104 AM PDT FRI OCT 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................85-99.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-21 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH 5 TO 15 MPH 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...............1 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................62-74.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................37-46 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH IN THE EVENING
BECOMING 25 TO 35 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
SATURDAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................74-88.
* 24 HR TREND..................11 DEGREES COOLER.
* MIN HUMIDITY....................26-34 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
EXTENDED
SUNDAY
NOT AS WARM. BREEZY. SHOWERS LIKELY AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 45-67. HIGHS 65-78. SOUTH WINDS 20 TO
30 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40-58. HIGHS 56-72. SOUTHWEST WINDS
15 TO 25 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 40-53. HIGHS 59-71. WEST WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 43-58. HIGHS 64-76.
THURSDAY
CLEAR. LOWS 48-61. HIGHS 68-81.
8 TO 10 DAY OUTLOOK
FRIDAY OCTOBER 16TH THROUGH SUNDAY OCTOBER
18TH: NEAR TO ABOVE NORMAL TEMPERATURES AND ABOVE MEDIAN
PRECIPITATION.
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