FULLERTON, CA 92837 Weather Forecast & Current Conditions

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FULLERTON, CA
Current Weather

3:53 AM PDT OCT 9, 2026
Clear
70°F
Feels Like: 70°F
Dewpoint: 66°F
Rel. Hum.: 87%
Visibility: 10 miles
Wind: Calm
Pressure: 29.77 inches
Last 72 hours

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FULLERTON, CA 92837
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Partly cloudy this morning...becoming sunny. Highs around 85 towards the coast to 90 farther inland. Light winds becoming southwest 10 mph this afternoon.
TONIGHT
Mostly clear in the evening...becoming cloudy. Lows 62 to 67. Areas of winds west to 10 mph in the evening becoming light.
SATURDAY
Cloudy. Highs 79 to 82. Light winds becoming southwest 10 mph in the afternoon.
SATURDAY NIGHT
Cloudy. A chance of showers overnight. Lows 61 to 66. Light winds becoming northwest 10 mph overnight. Chance of measurable precipitation 40 percent.
SUNDAY
Mostly cloudy with a chance of showers. Locally heavy rainfall possible in the afternoon. Highs 73 to 76. Areas of winds southwest 10 to 15 mph. Gusts to 30 mph...becoming 25 mph in the afternoon. Chance of measurable precipitation 50 percent.
SUNDAY NIGHT
Partly cloudy with a chance of showers in the evening, then cloudy with showers likely overnight. Cooler. Lows 52 to 60.
COLUMBUS DAY
Cloudy with showers in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs 67 to 71.
MONDAY NIGHT
Mostly cloudy in the evening...becoming partly cloudy. A chance of showers. Lows 50 to 57.
TUESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 70 to 73.
TUESDAY NIGHT
Clear. Lows 50 to 57.
WEDNESDAY
Mostly sunny. Highs around 77.
WEDNESDAY NIGHT
Clear. Lows 55 to 62.
THURSDAY
Mostly sunny. Warmer. Highs 85 to 88.

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  8:00 AM EDT  9/30/2026
Wednesday
30 SEP 2026
FULLERTON, CA 92837 weather forecast Day 1, 12 hours 11 AM 78° 80° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   3 56% 61°
High 85° FULLERTON, CA 92837 weather forecast Day 1, 15 hours 2 PM 84° 85° Clear SW   6 48% 62°
Clear



FULLERTON, CA 92837 weather forecast Day 1, 18 hours 5 PM 81° 82° Clear 0%

0% Thunder
( 0% severe)
SSW   6 53% 62°
FULLERTON, CA 92837 weather forecast Day 1, 21 hours 8 PM 73° 73° Clear   CALM 73% 64°
Thursday
1 OCT 2026
FULLERTON, CA 92837 weather forecast Day 2, 0 hours 11 PM 71° 71° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSE   2 79% 64°
Low 67° FULLERTON, CA 92837 weather forecast Day 2, 3 hours 2 AM 69° 69° Partly Cloudy   CALM 84% 64°
High 90° FULLERTON, CA 92837 weather forecast Day 2, 6 hours 5 AM 68° 68° Mostly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 84% 63°

Decreasing Clouds



FULLERTON, CA 92837 weather forecast Day 2, 9 hours 8 AM 69° 69° Mostly Cloudy   CALM 81% 63°
FULLERTON, CA 92837 weather forecast Day 2, 12 hours 11 AM 80° 81° Clear 0%

0% Thunder
( 0% severe)
  CALM 52% 61°
FULLERTON, CA 92837 weather forecast Day 2, 15 hours 2 PM 88° 88° Clear SW   5 40% 61°
FULLERTON, CA 92837 weather forecast Day 2, 18 hours 5 PM 87° 87° Clear 0%

0% Thunder
( 0% severe)
W   7 40% 60°
FULLERTON, CA 92837 weather forecast Day 2, 21 hours 8 PM 77° 79° Clear   CALM 58% 61°
Friday
2 OCT 2026
FULLERTON, CA 92837 weather forecast Day 3, 0 hours 11 PM 73° 73° Clear 0%

0% Thunder
( 0% severe)
  CALM 71% 63°
Low 69° FULLERTON, CA 92837 weather forecast Day 3, 3 hours 2 AM 71° 71° Clear   CALM 73% 62°
High 98° FULLERTON, CA 92837 weather forecast Day 3, 6 hours 5 AM 70° 70° Clear 0%

0% Thunder
( 0% severe)
  CALM 73% 61°

Clear



FULLERTON, CA 92837 weather forecast Day 3, 9 hours 8 AM 72° 72° Partly Cloudy   CALM 64% 59°
FULLERTON, CA 92837 weather forecast Day 3, 15 hours 11 AM 86° 85° Clear 0%

0% Thunder
( 0% severe)
  CALM 39% 58°
FULLERTON, CA 92837 weather forecast Day 3, 18 hours 2 PM 95° 94° Clear WSW   3 28% 57°
FULLERTON, CA 92837 weather forecast Day 3, 21 hours 5 PM 94° 92° Clear     W   7 27% 55°

FULLERTON, CA extended weather forecast

Saturday
3 OCT 2026
Sunday
4 OCT 2026
Monday
5 OCT 2026
Tuesday
6 OCT 2026
Wednesday
7 OCT 2026
Low 67° Low 69° Low 69° Low 67° Low 69°
High 101° High 98° High 97° High 97° High 96°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Clear
2% Rain
Clear
2% Rain
Clear
2% Rain
Clear
4% Rain
Clear
4% Rain
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