119
FNUS55 KPSR 051016
FWFPSR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL
ARIZONA AND SOUTHEAST CALIFORNIA
NATIONAL WEATHER SERVICE PHOENIX AZ
316 AM MST THU MAR 5 2026
DISCUSSION
THE WEATHER PATTERN WILL BECOME INCREASINGLY ACTIVE THROUGH THE
REST OF THE WEEK AS A SERIES OF DRY DISTURBANCES CROSS THE
SOUTHWEST. THE CURRENT PASSING SYSTEM CONTINUES TO BRING LIGHT
DIURNAL WINDS WHICH WILL BEGIN TO STRENGTHEN BRINGING BREEZY TO
WINDY CONDITIONS. DRY CONDITIONS WILL PERSIST ACROSS THE REGION
WITH MINIMUM RELATIVE HUMIDITY VALUES STAYING ENTRENCHED BETWEEN
10-15% THROUGH SATURDAY, WHILE OVERNIGHT RECOVERIES WILL ONLY
REACH THE 30-50% RANGE. WINDS ARE EXPECTED TO STRENGTHEN
SIGNIFICANTLY AFTER SUNRISE THIS MORNING, WITH WEST GUSTS OF
25-35 MPH IN THE PHOENIX AREA AND PEAK WNW GUSTS OF 30-45 MPH
ACROSS SOUTHEAST CALIFORNIA, LEADING TO ELEVATED FIRE WEATHER
CONCERNS BEFORE A POTENTIAL SLIGHT INCREASE IN MOISTURE ARRIVES
SUNDAY INTO MONDAY.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
AZZ132-052230-
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-
316 AM MST THU MAR 5 2026
TODAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................71-80.
* 24 HR TREND..................7 DEGREES COOLER.
* MIN HUMIDITY....................10-14 PCT.
* 24 HR TREND..................LITTLE CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE MORNING
BECOMING NORTHWEST 10 TO 20 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............WEST 15 TO 25 MPH IN THE MORNING
BECOMING 25 TO 35 MPH IN THE AFTERNOON.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9400 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 23 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................42-52.
* 24 HR TREND..................7 DEGREES COOLER.
* MAX HUMIDITY....................25-40 PCT.
* 24 HR TREND..................8 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................67-75.
* 24 HR TREND..................5 DEGREES COOLER.
* MIN HUMIDITY....................11-15 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR PHOENIX.......9200 FT AGL.
* TRANSPORT WIND FOR PHOENIX......WEST 14 KNOTS.
* DISPERSION FOR PHOENIX..........EXCELLENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 43-57. HIGHS 72-78. NORTHEAST
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
49-59. HIGHS 78-85. EAST WINDS 10 TO 20 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
49-59. HIGHS 72-77. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49-59. HIGHS 74-81.
WEDNESDAY
CLEAR. LOWS 50-60. HIGHS 80-86.
AZZ131-CAZ231-052230-
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-
316 AM MST THU MAR 5 2026 /216 AM PST THU MAR 5 2026/
TODAY
* SKY/WEATHER.....................SUNNY. PATCHY BLOWING DUST.
* MAX TEMPERATURE.................74-79.
* 24 HR TREND..................8 DEGREES COOLER.
* MIN HUMIDITY....................9-13 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH IN THE MORNING
BECOMING 15 TO 25 MPH IN THE AFTERNOON.
* WINDS...10000 FT MSL............WEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........7700 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTH 25 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................45-51.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................28-41 PCT.
* 24 HR TREND..................18 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.
* WINDS...10000 FT MSL............NORTHWEST 30 TO 40 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................71-76.
* 24 HR TREND..................3 DEGREES COOLER.
* MIN HUMIDITY....................12-16 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 10 TO 20 MPH.
* WINDS...10000 FT MSL............NORTHWEST 25 TO 35 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
* MIXING HEIGHT FOR YUMA..........8300 FT AGL.
* TRANSPORT WIND FOR YUMA.........NORTHWEST 14 KNOTS.
* DISPERSION FOR YUMA.............EXCELLENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 48-54. HIGHS 75-80. NORTH WINDS
15 TO 25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
48-55. HIGHS 79-84. NORTHEAST WINDS 10 TO 20 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
50-55. HIGHS 76-81. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
CLEAR. LOWS 50-55. HIGHS 79-84.
WEDNESDAY
CLEAR. LOWS 51-59. HIGHS 82-87.
AZZ133-052230-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/
CAZ-
316 AM MST THU MAR 5 2026
TODAY
* SKY/WEATHER.....................PARTLY SUNNY IN THE MORNING
BECOMING SUNNY IN THE AFTERNOON.
* MAX TEMPERATURE.................62-75.
* 24 HR TREND..................4 DEGREES COOLER.
* MIN HUMIDITY....................15-22 PCT.
* 24 HR TREND..................3 PCT WETTER.
* 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............SOUTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............1 PERCENT.
TONIGHT
* SKY/WEATHER.....................CLEAR.
* MIN TEMPERATURE.................30-44.
* 24 HR TREND..................9 DEGREES COOLER.
* MAX HUMIDITY....................35-55 PCT.
* 24 HR TREND..................5 PCT WETTER.
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH IN THE EVENING
BECOMING NORTH 5 TO 10 MPH AFTER MIDNIGHT.
* WINDS...10000 FT MSL............WEST 30 TO 40 MPH IN THE EVENING
BECOMING NORTHWEST 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................54-68.
* 24 HR TREND..................8 DEGREES COOLER.
* MIN HUMIDITY....................13-19 PCT.
* 24 HR TREND..................3 PCT DRIER.
* 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............WEST 15 TO 25 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SATURDAY
MOSTLY CLEAR. LOWS 32-55. HIGHS 60-74. EAST WINDS
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 40-55.
HIGHS 66-81. EAST WINDS 15 TO 25 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS 40-55. HIGHS
61-72. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
39-52. HIGHS 58-71.
WEDNESDAY
CLEAR. LOWS 39-55. HIGHS 66-79.
CAZ232-052230-
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
216 AM PST THU MAR 5 2026
TODAY
* SKY/WEATHER.....................SUNNY. PATCHY BLOWING DUST.
* MAX TEMPERATURE.................68-79.
* 24 HR TREND..................9 DEGREES COOLER.
* MIN HUMIDITY....................10-14 PCT.
* 24 HR TREND..................3 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 15 TO 25 MPH.
* WINDS...10000 FT MSL............WEST 15 TO 25 MPH IN THE MORNING
BECOMING 25 TO 35 MPH 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.................48-55.
* 24 HR TREND..................5 DEGREES COOLER.
* MAX HUMIDITY....................26-40 PCT.
* 24 HR TREND..................17 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............NORTHWEST 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.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................67-76.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................12-16 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 10 TO 20 MPH.
* 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.
EXTENDED
SATURDAY
BREEZY. MOSTLY CLEAR. LOWS 50-58. HIGHS 70-79. NORTH
WINDS 20 TO 30 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 52-59.
HIGHS 75-83. NORTH WINDS 15 TO 25 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
51-59. HIGHS 73-81. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
CLEAR. LOWS 51-59. HIGHS 75-84.
WEDNESDAY
CLEAR. LOWS 53-63. HIGHS 78-86.
CAZ230-052230-
JOSHUA TREE NATIONAL PARK-
216 AM PST THU MAR 5 2026
TODAY
* SKY/WEATHER.....................SUNNY. PATCHY BLOWING DUST IN THE
MORNING.
* MAX TEMPERATURE.................56-69.
* 24 HR TREND..................12 DEGREES COOLER.
* MIN HUMIDITY....................11-16 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..BREEZY. NORTHWEST 20 TO 30 MPH.
* WINDS...10000 FT MSL............WEST 15 TO 25 MPH IN THE MORNING
BECOMING NORTHWEST 30 TO 40 MPH 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.................38-49.
* 24 HR TREND..................4 DEGREES COOLER.
* MAX HUMIDITY....................31-40 PCT.
* 24 HR TREND..................11 PCT DRIER.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 10 TO 20 MPH.
* WINDS...10000 FT MSL............NORTHWEST 30 TO 40 MPH IN THE
EVENING BECOMING 20 TO 30 MPH AFTER MIDNIGHT.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
FRIDAY
* SKY/WEATHER.....................SUNNY.
* MAX TEMPERATURE.................55-68.
* 24 HR TREND..................LITTLE CHANGE.
* MIN HUMIDITY....................13-17 PCT.
* 24 HR TREND..................LITTLE RH CHANGE.
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 15 TO 25 MPH.
* WINDS...10000 FT MSL............NORTHWEST 20 TO 30 MPH.
* CHANCE OF PRECIP................0 PERCENT.
* CWR (>= 0.10 IN)................0 PERCENT.
* CHANCE OF THUNDER...............0 PERCENT.
EXTENDED
SATURDAY
BREEZY. MOSTLY CLEAR. LOWS 39-53. HIGHS 58-72. NORTH
WINDS 20 TO 30 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN
15 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 44-55. HIGHS 65-78. NORTH WINDS
15 TO 25 MPH.
MONDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS. LOWS 44-55.
HIGHS 66-78. SOUTHWEST WINDS 5 TO 15 MPH.
TUESDAY
CLEAR. LOWS 44-56. HIGHS 66-79.
WEDNESDAY
CLEAR. LOWS 47-58. HIGHS 69-82.
8 TO 10 DAY OUTLOOK
THURSDAY MARCH 12TH THROUGH SATURDAY MARCH
14TH:
ABOVE NORMAL TEMPERATURES AND BELOW MEDIAN PRECIPITATION.
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