109
FNUS55 KPSR 222127
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
227 PM MST FRI MAY 22 2026
DISCUSSION
TEMPERATURES WILL HOVER NEAR TO A FEW DEGREES ABOVE NORMAL THROUGH
SUNDAY. AFTERNOON MINRHS WILL RANGE BETWEEN 10-20% AREAWIDE
SATURDAY AND SUNDAY, WITH OVERNIGHT RECOVERIES GENERALLY BETWEEN
25-45% TONIGHT AND SLIGHT IMPROVEMENT FROM THERE SUNDAY NIGHT.
WINDS WILL CONTINUE TO FOLLOW TYPICAL DIURNAL TENDENCIES WITH
AFTERNOON UPSLOPE/UPVALLEY GUSTS OCCASIONALLY REACHING 15-25 MPH.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-230930-
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-
227 PM MST FRI MAY 22 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................62-72.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................31-48 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-97.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-19 PCT.
* 24 HR TREND..................4 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......12300 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 4 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
SATURDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................62-72.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................35-46 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING SOUTH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............SOUTHEAST 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.................93-100.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................11-15 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH 5 TO 15 MPH 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...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......12900 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTH 8 KNOTS.
* DISPERSION FOR PHOENIX..........VERY GOOD.
EXTENDED
MONDAY
MOSTLY CLEAR. LOWS 63-73. HIGHS 91-98. SOUTH WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
CLEAR. LOWS 61-71. HIGHS 90-96. SOUTH WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
WEDNESDAY
CLEAR. LOWS 59-69. HIGHS 87-95. SOUTH WINDS 10 TO
20 MPH.
THURSDAY
CLEAR. LOWS 59-69. HIGHS 86-93.
FRIDAY
CLEAR. LOWS 59-69. HIGHS 89-94.
AZZ131-CAZ231-230930-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
227 PM MST FRI MAY 22 2026 /227 PM PDT FRI MAY 22 2026/
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................61-66.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................39-61 PCT.
* 24 HR TREND..................10 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 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.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................93-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................16-20 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7900 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 16 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
SATURDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................61-66.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................42-60 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 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.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-99.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-17 PCT.
* 24 HR TREND..................4 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 20 TO 30 MPH IN THE
MORNING BECOMING SOUTH 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 YUMA..........9200 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 10 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
MONDAY
CLEAR. LOWS 62-67. HIGHS 94-99. SOUTH WINDS 5 TO
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
CLEAR. LOWS 60-67. HIGHS 93-98. SOUTH WINDS 15 TO
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
WEDNESDAY
CLEAR. LOWS 58-64. HIGHS 87-92. SOUTHWEST WINDS
10 TO 20 MPH.
THURSDAY
CLEAR. LOWS 58-64. HIGHS 87-92.
FRIDAY
CLEAR. LOWS 60-67. HIGHS 91-96.
AZZ133-230930-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
227 PM MST FRI MAY 22 2026
TONIGHT
* SKY/WEATHER.....................MOSTLY CLEAR.
* MIN TEMPERATURE.................49-64.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................27-37 PCT.
* 24 HR TREND..................7 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 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.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................80-95.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-15 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................51-66.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-44 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING
BECOMING NORTHEAST AFTER MIDNIGHT.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING SOUTH 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................83-97.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................11-17 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* 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.
EXTENDED
MONDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 48-69. HIGHS
78-93. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
CLEAR. LOWS 48-65. HIGHS 78-92. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
WEDNESDAY
CLEAR. LOWS 48-64. HIGHS 79-92. SOUTHWEST WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
THURSDAY
CLEAR. LOWS 48-63. HIGHS 78-91.
FRIDAY
CLEAR. LOWS 48-65. HIGHS 78-91.
CAZ232-230930-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
227 PM PDT FRI MAY 22 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................63-70.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................32-63 PCT.
* 24 HR TREND..................14 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTH 5 TO 15 MPH IN THE EVENING
BECOMING EAST AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................88-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-20 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................63-70.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................33-65 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................88-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................11-22 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
MONDAY
CLEAR. LOWS 63-71. HIGHS 89-99. SOUTHWEST WINDS 10 TO
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.
TUESDAY
CLEAR. LOWS 58-70. HIGHS 87-96. SOUTHWEST WINDS 15 TO
25 MPH.
WEDNESDAY
CLEAR. LOWS 58-65. HIGHS 81-90. SOUTHWEST WINDS
15 TO 25 MPH.
THURSDAY
CLEAR. LOWS 58-67. HIGHS 82-91.
FRIDAY
CLEAR. LOWS 60-71. HIGHS 86-95.
CAZ230-230930-
JOSHUA TREE NATIONAL PARK-
227 PM PDT FRI MAY 22 2026
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................56-67.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-39 PCT.
* 24 HR TREND..................11 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING
BECOMING EAST 5 TO 15 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................78-92.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-20 PCT.
* 24 HR TREND..................5 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............SOUTHEAST 5 TO 15 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................56-67.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................33-42 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............WEST 5 TO 15 MPH IN THE EVENING
BECOMING SOUTHEAST AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
SUNDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................78-92.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-20 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.
* 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.
EXTENDED
MONDAY
CLEAR. LOWS 53-68. HIGHS 79-93. WEST WINDS 10 TO
20 MPH.
TUESDAY
CLEAR. LOWS 47-67. HIGHS 76-90. SOUTHWEST WINDS 15 TO
25 MPH.
WEDNESDAY
CLEAR. LOWS 47-62. HIGHS 71-85. SOUTHWEST WINDS
10 TO 20 MPH.
THURSDAY
CLEAR. LOWS 47-63. HIGHS 73-85.
FRIDAY
CLEAR. LOWS 51-67. HIGHS 77-89.
8 TO 10 DAY OUTLOOK
SATURDAY MAY 30TH THROUGH MONDAY JUNE 1ST:
NEAR NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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