401
FNUS55 KPSR 081028
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
328 AM MST WED APR 8 2026
DISCUSSION
DRY CONDITIONS WITH ABOVE AVERAGE TEMPERATURES WILL PREVAIL
ACROSS THE DESERT SOUTHWEST THROUGH THE END OF THIS WEEK. RELATIVE
HUMIDITY WILL BOTTOM OUT BETWEEN 10-15% ACROSS THE LOWER DESERTS,
WITH HIGHER VALUES CLOSER TO 20% FOR THE HIGHER ELEVATIONS OF THE
EASTERN DISTRICTS. OVERNIGHT RECOVERY WILL RANGE FROM POOR TO
FAIR AS READINGS SHOULD RANGE MOSTLY BETWEEN 25-45% OVER THE NEXT
FEW NIGHTS. WINDS ARE EXPECTED TO FOLLOW DIURNAL TRENDS WITH
OCCASIONAL AFTERNOON UPSLOPE BREEZINESS. WINDS WILL INCREASE
ACROSS THE WESTERN DISTRICTS THURSDAY AND FRIDAY WITH GUSTS
REACHING 20-30 MPH AT TIMES.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-082230-
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-
328 AM MST WED APR 8 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................91-97.
* 24 HR TREND..................3 DEGREES WARMER.
* MIN HUMIDITY....................8-12 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 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.......11800 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 3 KNOTS.
* DISPERSION FOR PHOENIX..........GOOD.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................59-69.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................23-36 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................89-96.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-14 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 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......12400 FT AGL.
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 14 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
FRIDAY
PARTLY CLOUDY. LOWS 57-67. HIGHS 85-92. SOUTHWEST WINDS
5 TO 15 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
51-64. HIGHS 78-86. SOUTHWEST WINDS 15 TO 25 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 49-59. HIGHS 74-82. SOUTHWEST WINDS
10 TO 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49-59. HIGHS 75-81.
TUESDAY
MOSTLY CLEAR. LOWS 50-61. HIGHS 79-86.
AZZ131-CAZ231-082230-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
328 AM MST WED APR 8 2026 /328 AM PDT WED APR 8 2026/
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................94-99.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-14 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH IN THE AFTERNOON.
* 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.
* MIXING HEIGHT FOR YUMA..........10600 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTH 9 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................59-65.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-48 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 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.
THURSDAY
* SKY/WEATHER.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................90-95.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................11-15 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 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..........8900 FT AGL.
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 11 KNOTS.
* DISPERSION FOR YUMA.............VERY GOOD.
EXTENDED
FRIDAY
PARTLY CLOUDY. LOWS 59-68. HIGHS 87-92. SOUTHWEST WINDS
10 TO 20 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
51-62. HIGHS 80-85. SOUTHWEST WINDS 15 TO 25 MPH.
SUNDAY
BREEZY. MOSTLY CLEAR. LOWS 50-57. HIGHS 77-82.
SOUTHWEST WINDS 20 TO 30 MPH.
MONDAY
MOSTLY CLEAR. LOWS 50-56. HIGHS 78-83.
TUESDAY
MOSTLY CLEAR. LOWS 51-60. HIGHS 82-87.
AZZ133-082230-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
328 AM MST WED APR 8 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................76-92.
* 24 HR TREND..................4 DEGREES WARMER.
* MIN HUMIDITY....................9-14 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING
BECOMING SOUTHWEST IN THE AFTERNOON.
* 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.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................49-63.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................25-40 PCT.
* 24 HR TREND..................7 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
EVENING BECOMING NORTHEAST 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.....................MOSTLY SUNNY.
* MAX TEMPERATURE.................77-92.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-15 PCT.
* 24 HR TREND..................LITTLE 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.
EXTENDED
FRIDAY
PARTLY CLOUDY. LOWS 48-64. HIGHS 74-88. SOUTH WINDS
10 TO 20 MPH.
SATURDAY
BREEZY. PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. LOWS 42-61. HIGHS 68-83.
SOUTHWEST WINDS 20 TO 30 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
40-56. HIGHS 61-76. SOUTHWEST WINDS 15 TO 25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 39-54. HIGHS 61-75.
TUESDAY
MOSTLY CLEAR. LOWS 39-57. HIGHS 66-80.
CAZ232-082230-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
328 AM PDT WED APR 8 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................89-98.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................9-14 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING
BECOMING SOUTH 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.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................61-68.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................30-46 PCT.
* 24 HR TREND..................LITTLE RH 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...............0 PERCENT.
THURSDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................85-94.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................11-18 PCT.
* 24 HR TREND..................3 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.
EXTENDED
FRIDAY
PARTLY CLOUDY. LOWS 57-69. HIGHS 82-91. WEST WINDS
15 TO 25 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS
52-64. HIGHS 73-82. SOUTHWEST WINDS 15 TO 25 MPH.
SUNDAY
BREEZY. MOSTLY CLEAR. LOWS 51-60. HIGHS 70-80.
SOUTHWEST WINDS 20 TO 30 MPH.
MONDAY
MOSTLY CLEAR. LOWS 51-59. HIGHS 73-82.
TUESDAY
MOSTLY CLEAR. LOWS 53-64. HIGHS 78-86.
CAZ230-082230-
JOSHUA TREE NATIONAL PARK-
328 AM PDT WED APR 8 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................78-92.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................10-17 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE
MORNING BECOMING SOUTH 5 TO 15 MPH 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.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................51-62.
* 24 HR TREND..................LITTLE CHANGE.
* MAX HUMIDITY....................34-44 PCT.
* 24 HR TREND..................6 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............LIGHT AND VARIABLE 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.
THURSDAY
* SKY/WEATHER.....................PARTLY SUNNY.
* MAX TEMPERATURE.................73-88.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................13-23 PCT.
* 24 HR TREND..................4 PCT WETTER.
* 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...............0 PERCENT.
EXTENDED
FRIDAY
MOSTLY CLEAR. LOWS 43-63. HIGHS 70-85. SOUTHWEST WINDS
15 TO 25 MPH.
SATURDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 41-56.
HIGHS 60-76. SOUTHWEST WINDS 15 TO 25 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 38-51.
HIGHS 57-73. SOUTHWEST WINDS 15 TO 25 MPH.
MONDAY
MOSTLY CLEAR. LOWS 38-54. HIGHS 61-76.
TUESDAY
MOSTLY CLEAR. LOWS 43-58. HIGHS 67-81.
8 TO 10 DAY OUTLOOK
WEDNESDAY APRIL 15TH THROUGH FRIDAY APRIL 17TH:
ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.
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