348
FNUS55 KPSR 122007
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
107 PM MST SUN APR 12 2026
DISCUSSION
AN UNSETTLED WEATHER PATTERN WILL CONTINUE THROUGH THE FIRST PART
OF THIS WEEK RESULTING IN NEAR TO BELOW NORMAL TEMPERATURES AND
SLIGHTLY ELEVATED HUMIDITIES. MINRHS THROUGH MONDAY WILL MOSTLY
AVERAGE 20-25% WITH OVERNIGHT RECOVERIES OF 40-70%. WINDS WILL
SOMEWHAT FOLLOW DIURNAL PATTERNS, BUT WITH MORE OF A PREDOMINANT
SOUTHWESTERLY DIRECTION AND GUSTY AFTERNOON AND EVENING WINDS OF
25-35 MPH OVER MUCH OF THE AREA. CHANCES FOR LIGHT SHOWERS WILL BE
POSSIBLE LATER MONDAY AND MONDAY NIGHT, BUT CWR WILL REMAIN BELOW
10%.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-130815-
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-
107 PM MST SUN APR 12 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLOUDY IN THE EVENING
BECOMING PARTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................52-62.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................51-74 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................72-80.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................26-31 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9400 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 12 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
MONDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR. SLIGHT CHANCE OF
SHOWERS IN THE EVENING.
* MIN TEMPERATURE.................46-56.
* 24 HR TREND..................6 DEGREES COOLER.
* MAX HUMIDITY....................52-73 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................20 PERCENT IN THE EVENING
BECOMING 0 PERCENT AFTER MIDNIGHT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
TUESDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................73-79.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-20 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............WEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9700 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 11 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 49-60. HIGHS 80-86. SOUTH WINDS
5 TO 10 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
PARTLY CLOUDY. LOWS 52-62. HIGHS 81-88. SOUTH WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
CLEAR. LOWS 48-58. HIGHS 75-83. WEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 48-59. HIGHS 81-87.
SUNDAY
MOSTLY CLEAR. LOWS 51-64. HIGHS 87-94.
AZZ131-CAZ231-130815-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
107 PM MST SUN APR 12 2026 /107 PM PDT SUN APR 12 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................52-58.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................58-83 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH IN THE EVENING
BECOMING 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 35 TO 45 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................73-78.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................24-33 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
* MIXING HEIGHT FOR YUMA..........7800 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 21 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
MONDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................47-52.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................61-83 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH IN THE EVENING
BECOMING 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............WEST 20 TO 30 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
TUESDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................77-82.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................15-20 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........8500 FT AGL.
* TRANSPORT WIND FOR YUMA.........WEST 9 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 49-60. HIGHS 83-88. SOUTH WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
PARTLY CLOUDY. LOWS 53-60. HIGHS 83-88. SOUTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
CLEAR. LOWS 48-58. HIGHS 79-84. NORTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 48-58. HIGHS 83-88.
SUNDAY
MOSTLY CLEAR. LOWS 50-62. HIGHS 89-94.
AZZ133-130815-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
107 PM MST SUN APR 12 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................44-57.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................53-73 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................63-77.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................24-34 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
20 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............6 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS.
* MIN TEMPERATURE.................40-54.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................61-89 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................40 PERCENT.
* CWR (>= 0.10 IN)................20 PERCENT.
* CHANCE OF THUNDER...............13 PERCENT.
TUESDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................59-73.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................17-25 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............WEST 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...............3 PERCENT.
EXTENDED
WEDNESDAY
CLEAR. LOWS 36-56. HIGHS 67-81. SOUTHWEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
THURSDAY
PARTLY CLOUDY. LOWS 41-56. HIGHS 69-84. SOUTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 35-55. HIGHS 64-79. SOUTHWEST WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
CLEAR. LOWS 35-55. HIGHS 67-83.
SUNDAY
MOSTLY CLEAR. LOWS 39-61. HIGHS 72-89.
CAZ232-130815-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
107 PM PDT SUN APR 12 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................50-58.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................55-69 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 35 TO 45 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................67-76.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................21-34 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................48-55.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................52-74 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............WEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
TUESDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................73-82.
* 24 HR TREND..................5 DEGREES WARMER.
* MIN HUMIDITY....................14-21 PCT.
* 24 HR TREND..................10 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 52-62. HIGHS 78-87. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
PARTLY CLOUDY. LOWS 54-62. HIGHS 78-87. SOUTHWEST
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
CLEAR. LOWS 52-60. HIGHS 74-84. NORTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 52-62. HIGHS 78-87.
SUNDAY
MOSTLY CLEAR. LOWS 54-64. HIGHS 84-92.
CAZ230-130815-
JOSHUA TREE NATIONAL PARK-
107 PM PDT SUN APR 12 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................36-49.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................60-82 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH IN THE EVENING
BECOMING 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............WEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................54-69.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................24-43 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................10 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................36-48.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................54-79 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............NORTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............3 PERCENT.
TUESDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................64-76.
* 24 HR TREND..................8 DEGREES WARMER.
* MIN HUMIDITY....................13-22 PCT.
* 24 HR TREND..................15 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
WEDNESDAY
MOSTLY CLEAR. LOWS 43-57. HIGHS 67-81. SOUTHWEST
WINDS 10 TO 20 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42-57. HIGHS 66-82. WEST WINDS
10 TO 20 MPH.
FRIDAY
CLEAR. LOWS 42-54. HIGHS 63-75. NORTHWEST WINDS 15 TO
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 42-56. HIGHS 68-81.
SUNDAY
MOSTLY CLEAR. LOWS 47-59. HIGHS 73-87.
8 TO 10 DAY OUTLOOK
MONDAY APRIL 20TH THROUGH WEDNESDAY APRIL
22ND:
NEAR TO ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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