064
FNUS55 KPSR 090745
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
1245 AM MST SAT MAY 9 2026
DISCUSSION
HOT AND DRY CONDITIONS WILL PREVAIL WELL INTO NEXT WEEK WITH LOWER
DESERT HIGHS TOPPING 100 DEGREES THROUGH AT LEAST TUESDAY. WITH
AFTERNOON HIGHS WARMING 10-15 DEGREES ABOVE NORMAL, MINIMUM
HUMIDITY LEVELS WILL MOSTLY FALL INTO THE SINGLE DIGITS EACH DAY.
CORRESPONDINGLY, OVERNIGHT RECOVERY WILL ONLY BE IN A POOR TO
FAIR 20-35% RANGE. WINDS WILL BE VERY TYPICAL FOR MID MAY THROUGH
MONDAY WITH SOME GUSTS AROUND 20 MPH COMMON DURING MID/LATE
AFTERNOON.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-091945-
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-
1245 AM MST SAT MAY 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................99-105.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................6-10 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST 5 TO 15 MPH IN THE AFTERNOON.
* 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.
* MIXING HEIGHT FOR PHOENIX.......14600 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 11 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................66-76.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................16-25 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............WEST 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................100-106.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................5-9 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTH 10 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......15200 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 7 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
MONDAY
CLEAR. LOWS 68-78. HIGHS 103-110. SOUTHEAST WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
MOSTLY CLEAR. LOWS 67-77. HIGHS 99-106. SOUTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
WEDNESDAY
PARTLY CLOUDY. LOWS 65-75. HIGHS 96-102. SOUTH WINDS
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
MOSTLY CLEAR. LOWS 65-75. HIGHS 95-101.
FRIDAY
CLEAR. LOWS 64-74. HIGHS 94-101.
AZZ131-CAZ231-091945-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
1245 AM MST SAT MAY 9 2026 /1245 AM PDT SAT MAY 9 2026/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................101-106.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................6-10 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.
* MIXING HEIGHT FOR YUMA..........12100 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 11 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................65-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................24-37 PCT.
* 24 HR TREND..................6 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................103-108.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................6-10 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING
BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........12800 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 11 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
EXTENDED
MONDAY
CLEAR. LOWS 67-74. HIGHS 106-111. SOUTH WINDS 5 TO
10 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
MOSTLY CLEAR. LOWS 66-74. HIGHS 102-107. SOUTH WINDS
15 TO 25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
WEDNESDAY
MOSTLY CLEAR. LOWS 64-71. HIGHS 98-103. SOUTHWEST
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
CLEAR. LOWS 63-69. HIGHS 98-103.
FRIDAY
CLEAR. LOWS 63-69. HIGHS 97-102.
AZZ133-091945-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
1245 AM MST SAT MAY 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................85-100.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................7-11 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................54-70.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................19-29 PCT.
* 24 HR TREND..................6 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING NORTH AFTER MIDNIGHT.
* 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................87-102.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................6-10 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING WEST 5 TO 15 MPH IN THE AFTERNOON.
* 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
MONDAY
CLEAR. LOWS 54-73. HIGHS 87-104. EAST WINDS 15 TO
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
MOSTLY CLEAR. LOWS 56-73. HIGHS 87-102. SOUTHWEST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
WEDNESDAY
PARTLY CLOUDY. LOWS 55-72. HIGHS 83-98. SOUTHWEST
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
MOSTLY CLEAR. LOWS 52-69. HIGHS 83-97.
FRIDAY
CLEAR. LOWS 52-68. HIGHS 83-97.
CAZ232-091945-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1245 AM PDT SAT MAY 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................96-105.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................5-10 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................67-75.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................19-37 PCT.
* 24 HR TREND..................5 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................98-107.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................5-9 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH IN THE
MORNING BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
MONDAY
CLEAR. LOWS 69-78. HIGHS 100-109. SOUTH WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
MOSTLY CLEAR. LOWS 67-78. HIGHS 96-106. SOUTH WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
WEDNESDAY
MOSTLY CLEAR. LOWS 65-74. HIGHS 92-102. SOUTHWEST
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
CLEAR. LOWS 65-72. HIGHS 92-101.
FRIDAY
CLEAR. LOWS 64-72. HIGHS 91-100.
CAZ230-091945-
JOSHUA TREE NATIONAL PARK-
1245 AM PDT SAT MAY 9 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................86-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................6-12 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHWEST 5 TO 15 MPH IN THE
MORNING BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................60-71.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................19-28 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................88-102.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................6-10 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH IN THE
MORNING BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
MONDAY
CLEAR. LOWS 62-74. HIGHS 90-104. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
MOSTLY CLEAR. LOWS 57-74. HIGHS 86-100. SOUTHWEST
WINDS 15 TO 25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
WEDNESDAY
MOSTLY CLEAR. LOWS 54-70. HIGHS 81-96. SOUTHWEST
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
CLEAR. LOWS 54-67. HIGHS 82-95.
FRIDAY
CLEAR. LOWS 54-67. HIGHS 82-95.
8 TO 10 DAY OUTLOOK
SATURDAY MAY 16TH THROUGH MONDAY MAY 18TH:
ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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