078
FNUS56 KSGX 180846
FWFSGX
FIRE WEATHER PLANNING FORECAST FOR EXTREME SOUTHWESTERN CALIFORNIA
NATIONAL WEATHER SERVICE SAN DIEGO CA
146 AM PDT TUE AUG 18 2026
DISCUSSION
HIGH PRESSURE TO THE EAST WILL SLOWLY STRENGTHEN INTO THE MIDDLE
OF THIS WEEK WITH HIGH TEMPERATURES FOR WEDNESDAY AND THURSDAY
AROUND 5 DEGREES ABOVE AVERAGE FOR INLAND AREAS. HIGH
TEMPERATURES WILL COOL SLIGHTLY FOR FRIDAY INTO EARLY NEXT WEEK TO
WITHIN A FEW DEGREES OF AVERAGE FOR NEXT MONDAY. MONSOONAL
MOISTURE WILL INCREASE FOR LATE WEDNESDAY INTO THURSDAY WITH A
SLIGHT CHANCE OF AFTERNOON SHOWERS AND THUNDERSTORMS FOR THE
MOUNTAINS AND DESERTS FOR THURSDAY AND FRIDAY.
CAZ552-182300-
ORANGE COUNTY COASTAL AREAS-
INCLUDING THE CITIES OF HUNTINGTON BEACH, COSTA MESA,
NEWPORT BEACH, LAGUNA BEACH, AND SAN CLEMENTE
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG IN THE MORNING.
MAX TEMPERATURE.....76 TO 86.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........50 TO 60 PERCENT.
24 HR TREND......UP 10 PERCENT.
WIND (20 FT)........WINDS WEST 6 TO 10 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....65 TO 70.
24 HR TREND......LITTLE CHANGE.
MAX HUMIDITY........85 TO 95 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 9 MPH IN THE EVENING BECOMING
VARIABLE 2 TO 5 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY. PATCHY
FOG IN THE MORNING.
MAX TEMPERATURE.....77 TO 87.
24 HR TREND......LITTLE CHANGE.
MIN HUMIDITY........50 TO 60 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS NORTH AROUND 6 MPH BECOMING SOUTHWEST 6
TO 8 MPH IN THE AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
THURSDAY
PARTLY CLOUDY. HIGHS AROUND 80. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
PARTLY CLOUDY. HIGHS AROUND 80. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 80S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
SUNDAY
MOSTLY SUNNY. HIGHS AROUND 80.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
CAZ554-182300-
ORANGE COUNTY INLAND AREAS-
INCLUDING THE CITIES OF SANTA ANA, ANAHEIM, GARDEN GROVE, IRVINE,
ORANGE, FULLERTON, AND MISSION VIEJO
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY...BECOMING MOSTLY SUNNY. PATCHY
FOG IN THE MORNING.
MAX TEMPERATURE.....84 TO 92.
24 HR TREND......UP 2 DEGREES.
MIN HUMIDITY........40 TO 50 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 8 MPH.
CWR (>0.10 IN)......0 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY CLOUDY. PATCHY
FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....64 TO 69.
24 HR TREND......UP 1 DEGREE.
MAX HUMIDITY........75 TO 85 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS SOUTHWEST AROUND 6 MPH IN THE EVENING
BECOMING VARIABLE 2 TO 4 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY. PATCHY
FOG IN THE MORNING.
MAX TEMPERATURE.....85 TO 94.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........40 TO 50 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........VARIABLE 2 TO 5 MPH BECOMING SOUTHWEST 6 TO 9
MPH IN THE AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 90. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S.
CAZ243-182300-
SAN DIEGO COUNTY COASTAL AREAS-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG IN THE MORNING.
MAX TEMPERATURE.....77 TO 86.
24 HR TREND......UP 2 DEGREES.
MIN HUMIDITY........50 TO 60 PERCENT.
24 HR TREND......DOWN 5 PERCENT.
WIND (20 FT)........WINDS WEST 6 TO 10 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....64 TO 69.
24 HR TREND......UP 1 DEGREE.
MAX HUMIDITY........85 TO 95 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 9 MPH IN THE EVENING BECOMING
VARIABLE 2 TO 5 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY. PATCHY
FOG IN THE MORNING.
MAX TEMPERATURE.....77 TO 87.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........50 TO 60 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 8 MPH.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
THURSDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 80S. LIGHT WINDS.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 80S. LIGHT WINDS.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
SATURDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 80S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
SUNDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
PARTLY CLOUDY. HIGHS AROUND 80.
CAZ250-182300-
SAN DIEGO COUNTY INLAND VALLEYS-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....85 TO 90 IN THE WESTERN VALLEYS TO 92 TO 97
NEAR THE FOOTHILLS.
24 HR TREND......LITTLE CHANGE.
MIN HUMIDITY........25 TO 35 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 11 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....64 TO 71.
24 HR TREND......UP 2 DEGREES.
MAX HUMIDITY........75 TO 85 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 9 MPH IN THE EVENING BECOMING
VARIABLE 2 TO 5 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....86 TO 91 IN THE WESTERN VALLEYS TO 95 TO 100
NEAR THE FOOTHILLS.
24 HR TREND......UP 2 DEGREES.
MIN HUMIDITY........25 TO 35 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 9 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
SUNDAY
MOSTLY SUNNY. HIGHS AROUND 90.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S.
CAZ248-182300-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....93 TO 101.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........20 TO 25 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 12 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....65 TO 71.
24 HR TREND......UP 2 DEGREES.
MAX HUMIDITY........55 TO 65 PERCENT.
24 HR TREND......UP 10 PERCENT.
WIND (20 FT)........WINDS WEST 6 TO 11 MPH WITH GUSTS TO 20 MPH IN
THE EVENING BECOMING VARIABLE 3 TO 6 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....96 TO 104.
24 HR TREND......UP 2 DEGREES.
MIN HUMIDITY........20 TO 25 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS NORTH 6 MPH BECOMING WEST 6 TO 12 MPH
WITH GUSTS TO 25 MPH IN THE AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. LIGHT WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 100. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 90S. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 90S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 90S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 90S.
CAZ255-256-182300-
SAN BERNARDINO COUNTY MOUNTAINS-
INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF
THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS-
INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO
NATIONAL FOREST-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....78 TO 88 ABOVE 6000 FEET TO 84 TO 94 BELOW 6000
FEET.
24 HR TREND......LITTLE CHANGE.
MIN HUMIDITY........15 TO 20 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........
SLOPES...........WINDS WEST 6 TO 15 MPH. GUSTS TO 25 MPH IN THE
AFTERNOON.
RIDGETOP.........WINDS WEST 6 TO 15 MPH WITH GUSTS TO 20 MPH.
CWR (>0.10 IN)......1 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....51 TO 61 ABOVE 6000 FEET TO 62 TO 72 BELOW 6000
FEET.
24 HR TREND......UP 2 DEGREES.
MAX HUMIDITY........25 TO 30 PERCENT ON DESERT SLOPES TO 35 TO 45
PERCENT ON COASTAL SLOPES.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........
SLOPES...........WINDS SOUTHWEST 6 TO 13 MPH. GUSTS TO 25 MPH IN
THE EVENING.
RIDGETOP.........WINDS SOUTH 6 TO 13 MPH WITH GUSTS TO 20 MPH.
CWR (>0.10 IN)......1 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....80 TO 90 ABOVE 6000 FEET TO 86 TO 96 BELOW 6000
FEET.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........15 TO 20 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........
SLOPES...........WINDS SOUTH 6 TO 15 MPH WITH GUSTS TO 25 MPH.
RIDGETOP.........WINDS SOUTH 6 TO 15 MPH WITH GUSTS TO 20 MPH.
CWR (>0.10 IN)......1 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
WARMER. MOSTLY CLEAR. LOWS IN THE UPPER 60S.
LIGHT WINDS.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 80S. LIGHT
WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. LIGHT
WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. LIGHT
WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S.
MONDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGHS IN THE MID 80S.
CAZ258-182300-
SAN DIEGO COUNTY MOUNTAINS-
INCLUDING THE PALOMAR AND DESCANSO RANGER DISTRICTS OF THE
CLEVELAND NATIONAL FOREST-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....88 TO 98.
24 HR TREND......UP 3 DEGREES.
MIN HUMIDITY........15 TO 20 PERCENT ON DESERT SLOPES TO 10 TO 15
PERCENT ON COASTAL SLOPES.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........
SLOPES...........WINDS WEST 6 TO 12 MPH. GUSTS TO 25 MPH IN THE
AFTERNOON.
RIDGETOP.........WINDS WEST 6 TO 12 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......1 PERCENT.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....65 TO 75.
24 HR TREND......UP 2 DEGREES.
MAX HUMIDITY........30 TO 40 PERCENT ON DESERT SLOPES TO 35 TO 45
PERCENT ON COASTAL SLOPES.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........
SLOPES...........WINDS WEST 6 TO 12 MPH WITH GUSTS TO 20 MPH
BECOMING NORTHEAST AROUND 6 MPH AFTER MIDNIGHT.
RIDGETOP.........WINDS WEST 6 TO 11 MPH. GUSTS TO 20 MPH IN THE
EVENING.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....89 TO 99.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........15 TO 20 PERCENT ON DESERT SLOPES TO 10 TO 15
PERCENT ON COASTAL SLOPES.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........
SLOPES...........WINDS EAST 6 TO 9 MPH BECOMING WEST 6 TO 10 MPH
IN THE AFTERNOON. GUSTS TO 20 MPH.
RIDGETOP.........WINDS SOUTHEAST AROUND 6 MPH BECOMING WEST IN
THE AFTERNOON.
CWR (>0.10 IN)......1 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. LIGHT
WINDS.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 90S. LIGHT
WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 90S. LIGHT
WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGHS AROUND 90. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70.
SUNDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 80S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 80S.
CAZ257-182300-
SANTA ANA MOUNTAINS-
INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL
FOREST-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY...BECOMING PARTLY CLOUDY.
MAX TEMPERATURE.....89 TO 99.
24 HR TREND......UP 1 DEGREE.
MIN HUMIDITY........20 TO 30 PERCENT.
24 HR TREND......DOWN 10 PERCENT.
WIND (20 FT)........
SLOPES...........WINDS WEST 6 TO 11 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
RIDGETOP.........VARIABLE 2 TO 5 MPH BECOMING WEST AROUND 6 MPH
IN THE AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....63 TO 73.
24 HR TREND......UP 2 DEGREES.
MAX HUMIDITY........45 TO 55 PERCENT.
24 HR TREND......DOWN 5 PERCENT.
WIND (20 FT)........
SLOPES...........WINDS WEST 6 TO 9 MPH BECOMING NORTHEAST AROUND
6 MPH AFTER MIDNIGHT.
RIDGETOP.........VARIABLE 1 TO 3 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....91 TO 101.
24 HR TREND......UP 5 DEGREES.
MIN HUMIDITY........20 TO 30 PERCENT.
24 HR TREND......DOWN 5 PERCENT.
WIND (20 FT)........
SLOPES...........WINDS NORTH AROUND 6 MPH BECOMING SOUTHWEST 6
TO 10 MPH WITH GUSTS TO 20 MPH IN THE
AFTERNOON.
RIDGETOP.........VARIABLE 2 TO 4 MPH BECOMING NORTH AROUND 6 MPH
IN THE AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. LIGHT WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
SUNDAY
SUNNY. HIGHS AROUND 90.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
MONDAY
SUNNY. HIGHS IN THE UPPER 80S.
CAZ260-182300-
VICTOR VALLEY-APPLE VALLEY-LUCERNE VALLEY-JOHNSON VALLEY-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....97 TO 105.
24 HR TREND......LITTLE CHANGE.
MIN HUMIDITY........10 TO 15 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 15 MPH. GUSTS TO 30 MPH IN THE
AFTERNOON.
CWR (>0.10 IN)......1 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....67 TO 76.
24 HR TREND......LITTLE CHANGE.
MAX HUMIDITY........25 TO 35 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 6 TO 15 MPH WITH GUSTS TO 25 MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....99 TO 107.
24 HR TREND......UP 2 DEGREES.
MIN HUMIDITY........10 TO 15 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS WEST 7 MPH BECOMING SOUTH 7 TO 17 MPH
WITH GUSTS TO 30 MPH IN THE AFTERNOON.
CWR (>0.10 IN)......0 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. LIGHT
WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 103. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 100. LIGHT WINDS.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 90S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S.
SUNDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 90S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S.
MONDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 90S.
CAZ261-262-265-182300-
COACHELLA VALLEY-
INCLUDING THE PALM SPRINGS SOUTH COAST DESERT DISTRICT-
SAN DIEGO COUNTY DESERTS-
INCLUDING THE ANZA BORREGO DESERT STATE PARK-
SAN GORGONIO PASS NEAR BANNING-
146 AM PDT TUE AUG 18 2026
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....108 TO 113.
24 HR TREND......DOWN 1 DEGREE.
MIN HUMIDITY........15 PERCENT.
24 HR TREND......LITTLE CHANGE.
WIND (20 FT)........WINDS NORTHWEST 6 TO 14 MPH BECOMING SOUTHEAST
6 TO 16 MPH IN THE AFTERNOON. GUSTS TO 20 MPH.
CWR (>0.10 IN)......1 PERCENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....81 TO 89.
24 HR TREND......LITTLE CHANGE.
MAX HUMIDITY........25 TO 35 PERCENT.
24 HR TREND......DOWN 5 PERCENT.
WIND (20 FT)........WINDS NORTHWEST 6 TO 16 MPH WITH GUSTS TO 25
MPH.
CWR (>0.10 IN)......0 PERCENT.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....107 TO 112.
24 HR TREND......DOWN 1 DEGREE.
MIN HUMIDITY........15 TO 20 PERCENT.
24 HR TREND......UP 5 PERCENT.
WIND (20 FT)........WINDS SOUTHEAST 6 TO 11 MPH.
CWR (>0.10 IN)......1 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 80S. LIGHT
WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 109. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 80S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 108. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 80S. WEST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 108. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 80S.
SUNDAY
MOSTLY SUNNY. HIGHS AROUND 107.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 80S.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 106.
17
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