FULLERTON, CA 92837 Weather Forecast & Current Conditions

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FULLERTON, CA
Current Weather

4:53 AM PST JAN 14, 2026
Clear
48°F
Feels Like: 48°F
Dewpoint: 39°F
Rel. Hum.: 71%
Visibility: 10 miles
Wind: Calm
Pressure: 30.12 inches
Last 72 hours

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FULLERTON, CA 92837
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly sunny. Highs 80 to 83. Areas of winds northeast 15 to 25 mph with gusts to 40 mph becoming west 10 to 20 mph with gusts to 35 mph this afternoon.
TONIGHT
Clear. Lows 54 to 58. Areas of winds northeast 10 to 20 mph. Gusts to 40 mph...becoming 30 mph overnight.
THURSDAY
Mostly sunny. Highs 79 to 82. Areas of winds east 15 to 25 mph with gusts to 40 mph becoming southwest 10 to 20 mph with gusts to 30 mph in the afternoon.
THURSDAY NIGHT
Mostly clear. Lows around 53. Areas of winds east 10 to 15 mph becoming south overnight. Gusts to 25 mph.
FRIDAY
Mostly sunny. Highs around 78. Areas of winds west to 10 mph with gusts to 25 mph in the morning becoming light.
FRIDAY NIGHT
Mostly clear. Lows around 54.
SATURDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs around 76 towards the coast to 80 farther inland.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 54.
SUNDAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 76 to 79.
SUNDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 52 to 55.
MARTIN LUTHER KING JR DAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 75 to 78.
MONDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 53.
TUESDAY
Patchy fog in the morning. Partly cloudy. Highs 72 to 75.

Visible Weather Satellite
FULLERTON, CA 92837
Infrared Weather Satellite
FULLERTON, CA 92837
NEXRAD Weather Radar
FULLERTON, CA 92837

FULLERTON, CA 3 hourly weather forecast

weather forecast created  7:00 PM EST  1/13/2026
Wednesday
14 JAN 2026
FULLERTON, CA 92837 weather forecast Day 1, 0 hours 10 PM 59° 60° Clear 0%

0% Thunder
( 0% severe)
ENE   3 51% 41°
Low 52° FULLERTON, CA 92837 weather forecast Day 1, 3 hours 1 AM 55° 55° Clear NE   2 57% 40°
High 80° FULLERTON, CA 92837 weather forecast Day 1, 6 hours 4 AM 54° 54° Clear 0%

0% Thunder
( 0% severe)
NNE   2 52% 37°

Clear



FULLERTON, CA 92837 weather forecast Day 1, 9 hours 7 AM 53° 53° Clear NE   3 54% 37°
FULLERTON, CA 92837 weather forecast Day 1, 12 hours 10 AM 69° 69° Clear 0%

0% Thunder
( 0% severe)
NNW   3 33% 39°
FULLERTON, CA 92837 weather forecast Day 1, 15 hours 1 PM 79° 78° Clear WNW   2 22% 37°
FULLERTON, CA 92837 weather forecast Day 1, 18 hours 4 PM 77° 77° Clear 0%

0% Thunder
( 0% severe)
WSW   2 26% 40°
FULLERTON, CA 92837 weather forecast Day 1, 21 hours 7 PM 66° 66° Clear W   3 42% 42°
Thursday
15 JAN 2026
FULLERTON, CA 92837 weather forecast Day 2, 0 hours 10 PM 61° 62° Clear 0%

0% Thunder
( 0% severe)
NE   3 50% 42°
Low 53° FULLERTON, CA 92837 weather forecast Day 2, 3 hours 1 AM 58° 58° Clear NE   3 49% 39°
High 80° FULLERTON, CA 92837 weather forecast Day 2, 6 hours 4 AM 57° 57° Clear 0%

0% Thunder
( 0% severe)
NE   5 49% 38°

Clear



FULLERTON, CA 92837 weather forecast Day 2, 9 hours 7 AM 56° 55° Clear NE   6 51% 38°
FULLERTON, CA 92837 weather forecast Day 2, 12 hours 10 AM 70° 70° Clear 0%

0% Thunder
( 0% severe)
NE   5 34% 40°
FULLERTON, CA 92837 weather forecast Day 2, 15 hours 1 PM 78° 78° Clear N   3 25% 39°
FULLERTON, CA 92837 weather forecast Day 2, 18 hours 4 PM 76° 77° Clear 0%

0% Thunder
( 0% severe)
W   3 28% 41°
FULLERTON, CA 92837 weather forecast Day 2, 21 hours 7 PM 66° 66° Clear N   2 47% 45°

FULLERTON, CA extended weather forecast

Friday
16 JAN 2026
Saturday
17 JAN 2026
Sunday
18 JAN 2026
Monday
19 JAN 2026
Tuesday
20 JAN 2026
Low 48° Low 48° Low 50° Low 48° Low 49°
High 80° High 81° High 80° High 76° High 77°
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
Clear
1% Rain
Clear
1% Rain
Partly Cloudy
2% Rain
Clear
3% Rain
Clear
3% Rain
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