675
FNUS55 KPSR 122037
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
137 PM MST TUE MAY 12 2026
..ELEVATED FIRE DANGER WEDNESDAY AFTERNOON
DISCUSSION
WARM TEMPERATURES, VERY LOW HUMIDITY LEVELS, GUSTY WINDS, AND DRY
FUELS WILL RESULT IN AN ELEVATED FIRE DANGER WEDNESDAY AFTERNOON.
WITH TEMPERATURES AROUND 8 DEGREES ABOVE NORMAL, AFTERNOON
HUMIDITY LEVELS WILL FALL IN A 5-10% RANGE WHILE WINDS LOCALLY
GUST AROUND 25 MPH. THIS WILL FOLLOW MOSTLY POOR OVERNIGHT
RECOVERY NEAR 20%. ON THURSDAY, TEMPERATURES WILL ONLY BE SLIGHTLY
COOLER WITH MORE LIMITED WIND GUSTS.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-130845-
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-
137 PM MST TUE MAY 12 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................65-75.
* 24 HR TREND..................7 DEGREES COOLER.
* MAX HUMIDITY....................16-33 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH IN THE
EVENING BECOMING SOUTHEAST 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTH 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................94-100.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................5-9 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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............SOUTH 25 TO 35 MPH IN THE MORNING
BECOMING SOUTHWEST 10 TO 20 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......10800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 13 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
WEDNESDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................63-73.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................22-33 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH IN THE
EVENING BECOMING SOUTH 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................7-11 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......10500 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 8 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
FRIDAY
CLEAR. LOWS 64-74. HIGHS 94-100. SOUTH WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
CLEAR. LOWS 62-72. HIGHS 95-101. SOUTH WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SUNDAY
CLEAR. LOWS 61-71. HIGHS 90-97. SOUTH WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 60-70. HIGHS 90-96.
TUESDAY
MOSTLY CLEAR. LOWS 60-70. HIGHS 93-99.
AZZ131-CAZ231-130845-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
137 PM MST TUE MAY 12 2026 /137 PM PDT TUE MAY 12 2026/
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................64-69.
* 24 HR TREND..................8 DEGREES COOLER.
* MAX HUMIDITY....................30-47 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 35 TO 45 MPH IN THE EVENING
BECOMING 25 TO 35 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................96-101.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................7-11 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 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.
* MIXING HEIGHT FOR YUMA..........10400 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 10 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
WEDNESDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................63-68.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-45 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................96-101.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................8-12 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........9600 FT AGL.
* TRANSPORT WIND FOR YUMA.........WEST 9 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
FRIDAY
CLEAR. LOWS 63-69. HIGHS 97-102. SOUTH WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
CLEAR. LOWS 62-69. HIGHS 98-103. SOUTH WINDS 15 TO
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SUNDAY
CLEAR. LOWS 61-66. HIGHS 92-97. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 61-66. HIGHS 92-97.
TUESDAY
MOSTLY CLEAR. LOWS 61-67. HIGHS 95-100.
AZZ133-130845-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
137 PM MST TUE MAY 12 2026
TONIGHT
* SKY/WEATHER.....................PARTLY CLOUDY.
* MIN TEMPERATURE.................57-71.
* 24 HR TREND..................3 DEGREES COOLER.
* MAX HUMIDITY....................17-33 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................84-98.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................5-11 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST 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.
WEDNESDAY NIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................52-66.
* 24 HR TREND..................6 DEGREES COOLER.
* MAX HUMIDITY....................20-28 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH IN THE
EVENING BECOMING EAST 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH IN THE
EVENING BECOMING 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................81-95.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................7-11 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* 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 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
FRIDAY
CLEAR. LOWS 50-66. HIGHS 81-96. SOUTHWEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
CLEAR. LOWS 50-66. HIGHS 82-96. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SUNDAY
CLEAR. LOWS 49-65. HIGHS 79-94. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 49-64. HIGHS 79-92.
TUESDAY
MOSTLY CLEAR. LOWS 49-66. HIGHS 81-95.
CAZ232-130845-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
137 PM PDT TUE MAY 12 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................65-72.
* 24 HR TREND..................7 DEGREES COOLER.
* MAX HUMIDITY....................29-46 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-100.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................7-13 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 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.
WEDNESDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................64-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................27-44 PCT.
* 24 HR TREND..................3 PCT DRIER.
* 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 10 TO 20 MPH IN THE EVENING
BECOMING LIGHT AND VARIABLE AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................9-14 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING WEST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
FRIDAY
CLEAR. LOWS 65-72. HIGHS 92-102. SOUTHWEST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
CLEAR. LOWS 63-72. HIGHS 93-103. SOUTHWEST WINDS
15 TO 25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
CLEAR. LOWS 63-69. HIGHS 88-96. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 63-70. HIGHS 88-97.
TUESDAY
MOSTLY CLEAR. LOWS 63-72. HIGHS 90-99.
CAZ230-130845-
JOSHUA TREE NATIONAL PARK-
137 PM PDT TUE MAY 12 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................55-68.
* 24 HR TREND..................9 DEGREES COOLER.
* MAX HUMIDITY....................32-43 PCT.
* 24 HR TREND..................19 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 25 TO 35 MPH IN THE
EVENING BECOMING SOUTH 10 TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
WEDNESDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................79-95.
* 24 HR TREND..................6 DEGREES COOLER.
* MIN HUMIDITY....................10-18 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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...............0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................54-67.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-41 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 5 TO 15 MPH IN THE EVENING
BECOMING LIGHT AND VARIABLE AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................81-95.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-17 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
FRIDAY
CLEAR. LOWS 56-68. HIGHS 83-97. WEST WINDS 5 TO 15 MPH.
MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SATURDAY
CLEAR. LOWS 52-68. HIGHS 84-97. WEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
SUNDAY
CLEAR. LOWS 52-65. HIGHS 79-91. WEST WINDS 5 TO 15 MPH.
MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
MONDAY
CLEAR. LOWS 54-65. HIGHS 79-91.
TUESDAY
MOSTLY CLEAR. LOWS 55-67. HIGHS 81-93.
8 TO 10 DAY OUTLOOK
WEDNESDAY MAY 20TH THROUGH FRIDAY MAY
22ND: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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