401
FNUS55 KPSR 170834
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
134 AM MST SAT OCT 17 2026
DISCUSSION
STRONG WINDS WITH GUSTS UP TO 45 MPH WILL CONTINUE TO IMPACT
RIDGE TOPS AND WIND PRONE AREAS OF EASTERN DISTRICTS THROUGHOUT
THIS MORNING BEFORE WEAKENING BY SUNDAY. ELSEWHERE, WINDS WILL BE
SOMEWHAT GUSTY THROUGH THIS AFTERNOON. A FEW LIGHT SHOWERS MAY
ALSO MOVE INTO EASTERN DISTRICTS LATE THIS EVENING, HOWEVER THE
CHANCES FOR WETTING RAINFALL IS ONLY 10%. MINIMUM HUMIDITY LEVELS
WILL FALL INTO A 20-30% RANGE TODAY, THEN INCREASE CLOSER TO A
30-50% RANGE SUNDAY. THIS WILL FOLLOW GOOD TO EXCELLENT OVERNIGHT
RECOVERY.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-172045-
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-
134 AM MST SAT OCT 17 2026
TODAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................74-80.
* 24 HR TREND..................10 DEGREES COOLER.
* MIN HUMIDITY....................17-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 15 TO 25 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......5300 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHEAST 15 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS.
* MIN TEMPERATURE.................61-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................44-58 PCT.
* 24 HR TREND..................25 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.
* CHANCE OF PRECIP................20 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
SUNDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................76-82.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................32-41 PCT.
* 24 HR TREND..................17 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 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...............2 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......3800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......EAST 5 KNOTS.
* DISPERSION FOR PHOENIX..........MARGINAL.
EXTENDED
MONDAY
MOSTLY CLEAR. LOWS 62-72. HIGHS 78-85. EAST WINDS 5 TO
10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 62-72. HIGHS 79-86. SOUTHEAST WINDS
5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 58-68. HIGHS 76-83. SOUTHEAST WINDS 10 TO
20 MPH.
THURSDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 54-65. HIGHS 70-78.
FRIDAY
MOSTLY CLEAR. LOWS 53-63. HIGHS 69-76.
AZZ131-CAZ231-172045-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
134 AM MST SAT OCT 17 2026 /134 AM PDT SAT OCT 17 2026/
TODAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................77-82.
* 24 HR TREND..................13 DEGREES COOLER.
* MIN HUMIDITY....................15-19 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........3600 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTHEAST 13 KNOTS.
* DISPERSION FOR YUMA.............GOOD.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY IN THE EVENING
BECOMING PARTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................61-66.
* 24 HR TREND..................6 DEGREES COOLER.
* MAX HUMIDITY....................46-60 PCT.
* 24 HR TREND..................25 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 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.
SUNDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................79-84.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................28-33 PCT.
* 24 HR TREND..................14 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* 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.
* MIXING HEIGHT FOR YUMA..........6800 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTHEAST 6 KNOTS.
* DISPERSION FOR YUMA.............FAIR.
EXTENDED
MONDAY
MOSTLY CLEAR. LOWS 62-68. HIGHS 82-87. EAST WINDS 5 TO
10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 62-68. HIGHS 82-87. SOUTHEAST WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 58-67. HIGHS 78-83. SOUTH WINDS
10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 54-64. HIGHS 74-79.
FRIDAY
CLEAR. LOWS 53-60. HIGHS 73-78.
AZZ133-172045-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
134 AM MST SAT OCT 17 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................61-75.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................19-28 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 15 TO 25 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 25 TO 35 MPH IN THE
MORNING BECOMING SOUTH 10 TO 20 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS IN THE EVENING BECOMING CHANCE OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.................49-61.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................47-66 PCT.
* 24 HR TREND..................21 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
SUNDAY
* SKY/WEATHER.....................PARTLY SUNNY. CHANCE OF SHOWERS
IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.................63-77.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................35-50 PCT.
* 24 HR TREND..................19 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.
* CHANCE OF PRECIP................30 PERCENT.
* CWR (>= 0.10 IN)................10 PERCENT.
* CHANCE OF THUNDER...............12 PERCENT.
EXTENDED
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS 51-65. HIGHS 66-80. EAST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 52-65. HIGHS 67-81. SOUTHEAST WINDS 5 TO
15 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 52-65. HIGHS 65-79. SOUTHEAST WINDS 5 TO
15 MPH.
THURSDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 46-63. HIGHS 60-73.
FRIDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 41-57. HIGHS
57-71.
CAZ232-172045-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
134 AM PDT SAT OCT 17 2026
TODAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................73-82.
* 24 HR TREND..................12 DEGREES COOLER.
* MIN HUMIDITY....................14-19 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................60-67.
* 24 HR TREND..................6 DEGREES COOLER.
* MAX HUMIDITY....................37-53 PCT.
* 24 HR TREND..................16 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTHWEST 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.....................PARTLY SUNNY.
* MAX TEMPERATURE.................75-84.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................23-34 PCT.
* 24 HR TREND..................12 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* 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
MONDAY
MOSTLY CLEAR. LOWS 62-69. HIGHS 77-88. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 60-68. HIGHS 77-87. SOUTH WINDS
5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
56-66. HIGHS 71-81. SOUTHWEST WINDS 10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
53-62. HIGHS 68-78.
FRIDAY
CLEAR. LOWS 53-60. HIGHS 68-78.
CAZ230-172045-
JOSHUA TREE NATIONAL PARK-
134 AM PDT SAT OCT 17 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................63-76.
* 24 HR TREND..................10 DEGREES COOLER.
* MIN HUMIDITY....................17-24 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............EAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................51-61.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................40-50 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
EVENING BECOMING MOSTLY DOWNSLOPE/DOWNVALLEY 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.....................PARTLY SUNNY.
* MAX TEMPERATURE.................66-77.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................31-37 PCT.
* 24 HR TREND..................13 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.
* 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
MONDAY
MOSTLY CLEAR. LOWS 52-63. HIGHS 67-80. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49-62. HIGHS 65-79. SOUTHWEST WINDS
10 TO 20 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
43-60. HIGHS 58-73. SOUTHWEST WINDS 10 TO 20 MPH.
THURSDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 42-55.
HIGHS 56-70.
FRIDAY
CLEAR. LOWS 42-54. HIGHS 57-70.
8 TO 10 DAY OUTLOOK
SATURDAY OCTOBER 24TH THROUGH MONDAY
OCTOBER 26TH: NEAR NORMAL TEMPERATURES AND ABOVE MEDIAN
PRECIPITATION.
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