171
FNUS55 KPSR 010718
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1218 AM MST WED APR 1 2026
DISCUSSION
A WEAK COLD FRONT PUSHING THROUGH THE AREA THIS MORNING WILL BRING
SCATTERED LIGHT SHOWERS WITH LITTLE MEASURABLE RAINFALL. BREEZY
WESTERLY WINDS WILL ALSO AFFECT THE AREA TODAY WITH GUSTS AS HIGH
AS 25-35 MPH WITH THE FRONTAL PASSAGE AND AGAIN THIS AFTERNOON
ACROSS SOUTHEAST CALIFORNIA AND THE ARIZONA HIGH TERRAIN. MINRHS
TODAY WILL MOSTLY BE BETWEEN 20-30% BEFORE DRIER AIR GRADUALLY
MOVES IN LOWERING MINRHS TO 15-25% THURSDAY AND 10-15% STARTING
FRIDAY. AFTERNOON BREEZY CONDITIONS WILL BE POSSIBLE ON BOTH
THURSDAY AND FRIDAY FOCUSED MORE ACROSS THE WESTERN DISTRICTS.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-011930-
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-
1218 AM MST WED APR 1 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF
SHOWERS IN THE MORNING.
* MAX TEMPERATURE.................78-86.
* 24 HR TREND..................8 DEGREES COOLER.
* MIN HUMIDITY....................17-21 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............WEST 30 TO 40 MPH IN THE MORNING
BECOMING 15 TO 25 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................10 PERCENT IN THE MORNING
BECOMING 0 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9300 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 18 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................53-63.
* 24 HR TREND..................9 DEGREES COOLER.
* MAX HUMIDITY....................46-62 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................80-88.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................15-20 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* 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.
* MIXING HEIGHT FOR PHOENIX.......8100 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 14 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 53-64. HIGHS 82-89. NORTHWEST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 56-66. HIGHS 86-91. NORTHEAST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 57-68. HIGHS 89-96. NORTHEAST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
MONDAY
PARTLY CLOUDY. LOWS 60-70. HIGHS 88-95.
TUESDAY
MOSTLY CLEAR. LOWS 60-70. HIGHS 91-97.
AZZ131-CAZ231-011930-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1218 AM MST WED APR 1 2026 /1218 AM PDT WED APR 1 2026/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................82-87.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................18-23 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............WEST 25 TO 35 MPH IN THE MORNING
BECOMING 15 TO 25 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........8000 FT AGL.
* TRANSPORT WIND FOR YUMA.........WEST 17 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................54-59.
* 24 HR TREND..................9 DEGREES COOLER.
* MAX HUMIDITY....................55-74 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................83-88.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................18-22 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* 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.
* MIXING HEIGHT FOR YUMA..........5800 FT AGL.
* TRANSPORT WIND FOR YUMA.........WEST 12 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 55-62. HIGHS 83-88. NORTH WINDS
15 TO 25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 55-62. HIGHS 87-92. NORTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 55-66. HIGHS 92-97. NORTHWEST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
MONDAY
PARTLY CLOUDY. LOWS 58-66. HIGHS 91-96.
TUESDAY
CLEAR. LOWS 58-65. HIGHS 93-98.
AZZ133-011930-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1218 AM MST WED APR 1 2026
TODAY
* SKY/WEATHER.....................MOSTLY CLOUDY IN THE MORNING
BECOMING MOSTLY SUNNY IN THE AFTERNOON. SHOWERS LIKELY IN THE
MORNING.
* MAX TEMPERATURE.................63-78.
* 24 HR TREND..................10 DEGREES COOLER.
* MIN HUMIDITY....................21-34 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............WEST 35 TO 45 MPH IN THE MORNING
BECOMING 25 TO 35 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................60 PERCENT IN THE MORNING
BECOMING 0 PERCENT IN THE AFTERNOON.
* CWR (>= 0.10 IN)................30 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................41-56.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................45-66 PCT.
* 24 HR TREND..................23 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................67-82.
* 24 HR TREND..................4 DEGREES WARMER.
* MIN HUMIDITY....................16-25 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST 5 TO 15 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 42-60. HIGHS 69-84. NORTH WINDS
10 TO 20 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 43-63. HIGHS 71-86. NORTHEAST
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 47-64. HIGHS 73-89. EAST WINDS 15 TO
25 MPH.
MONDAY
PARTLY CLOUDY. LOWS 47-64. HIGHS 72-89.
TUESDAY
MOSTLY CLEAR. LOWS 48-64. HIGHS 75-91.
CAZ232-011930-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1218 AM PDT WED APR 1 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................76-86.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................18-28 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............WEST 30 TO 40 MPH IN THE MORNING
BECOMING 15 TO 25 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................54-61.
* 24 HR TREND..................7 DEGREES COOLER.
* MAX HUMIDITY....................49-66 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................77-88.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-26 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* 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.
EXTENDED
FRIDAY
BREEZY. MOSTLY CLEAR. LOWS 56-65. HIGHS 77-86. NORTH
WINDS 20 TO 30 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 59-66. HIGHS 82-90. NORTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 59-68. HIGHS 87-95. NORTHWEST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
MONDAY
PARTLY CLOUDY. LOWS 61-68. HIGHS 86-94.
TUESDAY
CLEAR. LOWS 61-68. HIGHS 89-97.
CAZ230-011930-
JOSHUA TREE NATIONAL PARK-
1218 AM PDT WED APR 1 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................64-81.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................18-35 PCT.
* 24 HR TREND..................15 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 25 TO 35 MPH IN THE
MORNING BECOMING WEST 15 TO 25 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................43-55.
* 24 HR TREND..................4 DEGREES COOLER.
* MAX HUMIDITY....................51-73 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................66-82.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................17-34 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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.
EXTENDED
FRIDAY
BREEZY. MOSTLY CLEAR. LOWS 44-58. HIGHS 64-78. NORTH
WINDS 20 TO 30 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 48-60. HIGHS 71-83. NORTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 51-64. HIGHS 76-89. NORTHWEST WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
MONDAY
PARTLY CLOUDY. LOWS 53-64. HIGHS 75-88.
TUESDAY
CLEAR. LOWS 52-63. HIGHS 78-92.
8 TO 10 DAY OUTLOOK
WEDNESDAY APRIL 8TH THROUGH FRIDAY APRIL 10TH:
ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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