748
FNUS55 KPSR 120816
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
116 AM 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%.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-122030-
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-
116 AM MST SUN APR 12 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY IN THE MORNING
BECOMING MOSTLY CLOUDY IN THE AFTERNOON.
* MAX TEMPERATURE.................77-84.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................16-21 PCT.
* 24 HR TREND..................4 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.
* MIXING HEIGHT FOR PHOENIX.......7900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 15 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................51-61.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................49-74 PCT.
* 24 HR TREND..................10 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. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................72-80.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................23-29 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 13 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
TUESDAY
CLEAR. LOWS 47-57. HIGHS 74-80. WEST WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 49-61. HIGHS 81-87. SOUTHWEST 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
MOSTLY CLEAR. LOWS 49-59. HIGHS 77-84.
SATURDAY
MOSTLY CLEAR. LOWS 49-60. HIGHS 82-88.
AZZ131-CAZ231-122030-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
116 AM MST SUN APR 12 2026 /116 AM PDT SUN APR 12 2026/
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................78-83.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................21-26 PCT.
* 24 HR TREND..................8 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
* MIXING HEIGHT FOR YUMA..........8500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 14 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................52-58.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................60-83 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 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. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................74-79.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................24-31 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............5 PERCENT.
* MIXING HEIGHT FOR YUMA..........10300 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 27 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
EXTENDED
TUESDAY
CLEAR. LOWS 47-55. HIGHS 77-82. WEST WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 49-60. HIGHS 83-88. SOUTHWEST 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
MOSTLY CLEAR. LOWS 50-58. HIGHS 80-85.
SATURDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 84-89.
AZZ133-122030-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
116 AM MST SUN APR 12 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................67-82.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................14-22 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................44-56.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................48-65 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* 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.
* MAX TEMPERATURE.................63-77.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................22-33 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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...............4 PERCENT.
EXTENDED
TUESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
36-54. HIGHS 60-75. SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY
CLEAR. LOWS 36-55. HIGHS 67-81. NORTHWEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
THURSDAY
PARTLY CLOUDY. LOWS 40-55. HIGHS 69-84. SOUTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 37-55. HIGHS 66-80.
SATURDAY
CLEAR. LOWS 37-57. HIGHS 69-83.
CAZ232-122030-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
116 AM PDT SUN APR 12 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................71-81.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................23-36 PCT.
* 24 HR TREND..................8 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.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................51-59.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................56-71 PCT.
* 24 HR TREND..................7 PCT WETTER.
* 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...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.................67-77.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................22-34 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING
10 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............5 PERCENT.
EXTENDED
TUESDAY
CLEAR. LOWS 48-59. HIGHS 73-82. WEST WINDS 5 TO
15 MPH.
WEDNESDAY
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 54-60. HIGHS 75-85.
SATURDAY
MOSTLY CLEAR. LOWS 54-63. HIGHS 79-88.
CAZ230-122030-
JOSHUA TREE NATIONAL PARK-
116 AM PDT SUN APR 12 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................58-74.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................27-48 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.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................36-49.
* 24 HR TREND..................4 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 IN THE EVENING
BECOMING SOUTHWEST 10 TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................55-71.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................22-40 PCT.
* 24 HR TREND..................6 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...............6 PERCENT.
EXTENDED
TUESDAY
CLEAR. LOWS 36-53. HIGHS 64-77. WEST WINDS 5 TO
15 MPH.
WEDNESDAY
CLEAR. LOWS 43-57. HIGHS 68-82. SOUTHWEST WINDS
10 TO 20 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42-57. HIGHS 67-82. WEST WINDS
10 TO 20 MPH.
FRIDAY
CLEAR. LOWS 42-54. HIGHS 64-78.
SATURDAY
MOSTLY CLEAR. LOWS 43-57. HIGHS 69-82.
8 TO 10 DAY OUTLOOK
SUNDAY APRIL 19TH THROUGH TUESDAY APRIL
21ST: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page