900
FNUS55 KPSR 031000
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
300 AM MST SUN MAY 3 2026
DISCUSSION
ABOVE NORMAL TEMPERATURES TODAY WILL BE FOLLOWED BY A SIGNIFICANT
COOLDOWN TO BELOW NORMAL LEVELS DURING THE FIRST PART OF THE
WEEK. EASTERN DISTRICTS WILL LIKELY OBSERVE EASTERLY WIND GUSTS
UPWARDS OF 20-30 MPH THIS MORNING. MORE WIDESPREAD GUSTS IN
EXCESS OF 25 MPH ARE EXPECTED TO MATERIALIZE LATER THIS AFTERNOON
AND EVENING AND AGAIN ON MONDAY. LOCALLY HIGHER GUSTS IN EXCESS
OF 40 MPH ARE EXPECTED ACROSS THE WESTERN HALF OF IMPERIAL COUNTY.
THE COMBINATION OF THE GUSTY WINDS ALONG WITH THE LOWERED RH
VALUES WILL RESULT IN AN ELEVATED FIRE DANGER THREAT THROUGH
MONDAY. MINRHS BETWEEN 10-20% TODAY WILL IMPROVE TO 15-25% ON
MONDAY ALONG WITH FAIR TO GOOD OVERNIGHT RECOVERIES.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-032200-
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-
300 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................90-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-16 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH IN THE
MORNING BECOMING SOUTH 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......14600 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 18 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY IN THE EVENING
BECOMING MOSTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE.................59-69.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................42-53 PCT.
* 24 HR TREND..................17 PCT WETTER.
* 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.
MONDAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................76-83.
* 24 HR TREND..................14 DEGREES COOLER.
* MIN HUMIDITY....................18-24 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.
* MIXING HEIGHT FOR PHOENIX.......7600 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 11 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
TUESDAY
NOT AS WARM. MOSTLY CLEAR. LOWS 50-60. HIGHS 73-79.
SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY
CLEAR. LOWS 50-63. HIGHS 81-87. WEST WINDS 5 TO
10 MPH.
THURSDAY
CLEAR. LOWS 57-68. HIGHS 91-97. NORTHEAST WINDS 5 TO
10 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
FRIDAY
CLEAR. LOWS 61-71. HIGHS 96-101.
SATURDAY
CLEAR. LOWS 64-74. HIGHS 98-103.
AZZ131-CAZ231-032200-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
300 AM MST SUN MAY 3 2026 /300 AM PDT SUN MAY 3 2026/
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................92-97.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................14-18 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7500 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 22 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. PATCHY BLOWING
DUST AFTER MIDNIGHT.
* MIN TEMPERATURE.................59-64.
* 24 HR TREND..................6 DEGREES COOLER.
* MAX HUMIDITY....................46-56 PCT.
* 24 HR TREND..................20 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...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................77-82.
* 24 HR TREND..................15 DEGREES COOLER.
* MIN HUMIDITY....................19-25 PCT.
* 24 HR TREND..................7 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...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7100 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 11 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
TUESDAY
NOT AS WARM. MOSTLY CLEAR. LOWS 51-57. HIGHS 75-80.
WEST WINDS 10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 51-63. HIGHS 84-89. WEST WINDS 5 TO
15 MPH.
THURSDAY
CLEAR. LOWS 57-67. HIGHS 94-99. NORTHWEST WINDS 5 TO
10 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
FRIDAY
CLEAR. LOWS 62-70. HIGHS 99-104.
SATURDAY
CLEAR. LOWS 65-70. HIGHS 101-106.
AZZ133-032200-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
300 AM MST SUN MAY 3 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................75-91.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................13-23 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH IN THE MORNING
BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............4 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................49-63.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................46-60 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 20 TO 30 MPH IN THE
EVENING BECOMING 30 TO 40 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............2 PERCENT.
MONDAY
* SKY/WEATHER.....................MOSTLY CLOUDY.
* MAX TEMPERATURE.................68-81.
* 24 HR TREND..................9 DEGREES COOLER.
* MIN HUMIDITY....................18-26 PCT.
* 24 HR TREND..................4 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...............0 PERCENT.
EXTENDED
TUESDAY
COOLER. PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS 38-58. HIGHS 61-76. SOUTHWEST WINDS 10 TO
20 MPH.
WEDNESDAY
CLEAR. LOWS 38-59. HIGHS 68-82. WEST WINDS 5 TO
15 MPH.
THURSDAY
CLEAR. LOWS 42-64. HIGHS 77-92. EAST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
FRIDAY
MOSTLY CLEAR. LOWS 47-67. HIGHS 81-97.
SATURDAY
CLEAR. LOWS 51-68. HIGHS 83-98.
CAZ232-032200-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
300 AM PDT SUN MAY 3 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................86-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-19 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY. PATCHY BLOWING
DUST.
* MIN TEMPERATURE.................57-65.
* 24 HR TREND..................8 DEGREES COOLER.
* MAX HUMIDITY....................38-56 PCT.
* 24 HR TREND..................17 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 15 TO 25 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.................71-80.
* 24 HR TREND..................15 DEGREES COOLER.
* MIN HUMIDITY....................18-32 PCT.
* 24 HR TREND..................9 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.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 51-60. HIGHS 70-79. WEST WINDS
10 TO 20 MPH.
WEDNESDAY
CLEAR. LOWS 52-67. HIGHS 80-88. WEST WINDS 5 TO
15 MPH.
THURSDAY
CLEAR. LOWS 60-72. HIGHS 90-98. WEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
FRIDAY
CLEAR. LOWS 65-74. HIGHS 96-104.
SATURDAY
CLEAR. LOWS 67-75. HIGHS 97-106.
CAZ230-032200-
JOSHUA TREE NATIONAL PARK-
300 AM PDT SUN MAY 3 2026
TODAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................74-90.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................14-22 PCT.
* 24 HR TREND..................9 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................44-58.
* 24 HR TREND..................12 DEGREES COOLER.
* MAX HUMIDITY....................42-63 PCT.
* 24 HR TREND..................19 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH IN THE
EVENING BECOMING 15 TO 25 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
MONDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................60-77.
* 24 HR TREND..................14 DEGREES COOLER.
* MIN HUMIDITY....................19-36 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
TUESDAY
MOSTLY CLEAR. LOWS 38-55. HIGHS 58-74. WEST WINDS
10 TO 20 MPH.
WEDNESDAY
WARMER, CLEAR. LOWS 42-63. HIGHS 72-84. NORTHWEST
WINDS 5 TO 15 MPH.
THURSDAY
CLEAR. LOWS 53-68. HIGHS 80-93. NORTHWEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
FRIDAY
CLEAR. LOWS 59-71. HIGHS 86-100.
SATURDAY
CLEAR. LOWS 61-71. HIGHS 87-101.
8 TO 10 DAY OUTLOOK
SUNDAY MAY 10TH THROUGH TUESDAY MAY 12TH:
ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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