FULLERTON, CA 92837 Weather Forecast & Current Conditions
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  92837 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

FULLERTON, CA
Current Weather
2:53 AM PDT SEP 18, 2025
Clear
Light Rain
72°F
Feels Like: 72°F
Dewpoint: 64°F
Rel. Hum.: 76%
Visibility: 10 miles
Wind: Calm
Pressure: 29.85 inches
Last 72 hours

Local Area Snow Depth

California Current Weather

California MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  92837 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

FULLERTON, CA 92837
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy with showers likely and a slight chance of thunderstorms this morning, then partly cloudy with a chance of showers and thunderstorms this afternoon. Highs 81 to 85. Areas of winds south 10 mph. Chance of measurable precipitation 70 percent.
TONIGHT
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 65 to 70. Areas of winds southwest 10 mph in the evening becoming light. Chance of measurable precipitation 40 percent.
FRIDAY
Mostly cloudy in the morning...becoming partly cloudy. A chance of showers and a slight chance of thunderstorms. Highs 79 to 82. Light winds becoming southwest 10 mph in the afternoon. Chance of measurable precipitation 30 percent.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 61 to 67. Areas of winds west 10 mph in the evening becoming light.
SATURDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 79 to 82 towards the coast to 83 farther inland. Light winds becoming west 10 mph in the afternoon.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 61 to 66.
SUNDAY
Partly cloudy with a slight chance of showers. Highs 80 to 84.
SUNDAY NIGHT
Partly cloudy with a slight chance of showers. Lows 61 to 66.
MONDAY
Partly cloudy with a slight chance of showers. Highs 81 to 84 towards the coast to 86 farther inland.
MONDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 63 to 69.
TUESDAY
Partly cloudy. A slight chance of showers in the morning. Highs 80 to 83 towards the coast to 85 farther inland.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 62 to 67.
WEDNESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 80 to 83 towards the coast to 84 farther inland.

  92837 WEATHER SATELLITE LOOPS
Visible Weather Satellite
FULLERTON, CA 92837
Infrared Weather Satellite
FULLERTON, CA 92837
  92837 WEATHER RADAR LOOP
NEXRAD Weather Radar
FULLERTON, CA 92837
 MOS COMPUTER WEATHER FORECAST

FULLERTON, CA 3 hourly weather forecast
weather forecast created  8:00 PM EDT  9/17/2025
Thursday
18 SEP 2025		 FULLERTON, CA 92837 weather forecast Day 1, 0 hours 11 PM 73° 73° Mostly Cloudy 45%
RAIN
***		 0% Thunder
( 13% severe)		 W   5 71% 63°
Low 70° FULLERTON, CA 92837 weather forecast Day 1, 3 hours 2 AM 73° 73° Mostly Cloudy NNW   3 73% 64°
High 84° FULLERTON, CA 92837 weather forecast Day 1, 6 hours 5 AM 71° 71° Mostly Cloudy 54%
RAIN
***		 0% Thunder
( 22% severe)		 N   3 81% 65°

Mostly Cloudy

Rain Likely

 FULLERTON, CA 92837 weather forecast Day 1, 9 hours 8 AM 73° 73° Mostly Cloudy ENE   3 79% 66°
FULLERTON, CA 92837 weather forecast Day 1, 12 hours 11 AM 78° 80° Mostly Cloudy 46%
RAIN
.01–.1 in		 0% Thunder
( 25% severe)		 SE   2 67% 66°
FULLERTON, CA 92837 weather forecast Day 1, 15 hours 2 PM 82° 84° Partly Cloudy S   3 56% 65°
FULLERTON, CA 92837 weather forecast Day 1, 18 hours 5 PM 80° 82° Mostly Cloudy 33%
RAIN
.01–.1 in		 0% Thunder
( 19% severe)		 SSW   3 62% 66°
FULLERTON, CA 92837 weather forecast Day 1, 21 hours 8 PM 74° 74° Partly Cloudy SSW   3 76% 66°
Friday
19 SEP 2025		 FULLERTON, CA 92837 weather forecast Day 2, 0 hours 11 PM 72° 72° Mostly Cloudy 22%
RAIN
<.01 in		 0% Thunder
( 9% severe)		 SSW   3 81% 66°
Low 70° FULLERTON, CA 92837 weather forecast Day 2, 3 hours 2 AM 72° 72° Mostly Cloudy S   2 84% 67°
High 82° FULLERTON, CA 92837 weather forecast Day 2, 6 hours 5 AM 71° 71° Mostly Cloudy 17%
RAIN
<.01 in		 0% Thunder
( 4% severe)		 S   2 87% 67°

Mostly Cloudy



 FULLERTON, CA 92837 weather forecast Day 2, 9 hours 8 AM 71° 71° Mostly Cloudy S   2 87% 67°
FULLERTON, CA 92837 weather forecast Day 2, 12 hours 11 AM 75° 75° Mostly Cloudy 12%
RAIN
<.01 in		 0% Thunder
( 5% severe)		 SW   2 74% 66°
FULLERTON, CA 92837 weather forecast Day 2, 15 hours 2 PM 79° 81° Partly Cloudy SW   6 64% 66°
FULLERTON, CA 92837 weather forecast Day 2, 18 hours 5 PM 79° 81° Clear 3%

 0% Thunder
( 1% severe)		 WSW   7 62% 65°
FULLERTON, CA 92837 weather forecast Day 2, 21 hours 8 PM 72° 72° Clear WSW   5 76% 64°

FULLERTON, CA extended weather forecast
Saturday
20 SEP 2025		 Sunday
21 SEP 2025		 Monday
22 SEP 2025		 Tuesday
23 SEP 2025		 Wednesday
24 SEP 2025
Low 68° Low 67° Low 65° Low 66° Low 65°
High 84° High 84° High 82° High 80° High 82°
FULLERTON, CA 92837 weather forecast Day 3 FULLERTON, CA 92837 weather forecast Day 4 FULLERTON, CA 92837 weather forecast Day 5 FULLERTON, CA 92837 weather forecast Day 6 FULLERTON, CA 92837 weather forecast Day 7
Partly Cloudy
9% Rain		 Partly Cloudy
3% Rain		 Mostly Cloudy
13% Rain		 Mostly Cloudy
39% Rain		 Partly Cloudy
14% Rain
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