FULLERTON, CA 92837 Weather Forecast & Current Conditions

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FULLERTON, CA
Current Weather

2:53 AM PDT SEP 25, 2026
Clear
68°F
Feels Like: 68°F
Dewpoint: 64°F
Rel. Hum.: 87%
Visibility: 9 miles
Wind: Calm
Pressure: 29.90 inches
Last 72 hours

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FULLERTON, CA 92837
Weather Forecast

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Snow Depth pages
TODAY
Mostly cloudy this morning...becoming sunny. Highs around 78 towards the coast to 80 to 84 farther inland. Light winds becoming southwest 10 mph this afternoon.
TONIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 64 to 69. Areas of winds southwest to 10 mph in the evening becoming light.
FRIDAY
Partly cloudy with patchy fog in the morning...becoming sunny. Highs around 85 towards the coast to 90 farther inland. Light winds becoming southwest 10 mph in the afternoon.
FRIDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 63 to 68. Areas of winds west to 10 mph in the evening becoming light.
SATURDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 85 to 88 towards the coast to 91 farther inland. Light winds becoming southwest 10 mph in the afternoon.
SATURDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy. Lows 64 to 69.
SUNDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 83 to 86.
SUNDAY NIGHT
Mostly clear in the evening, then partly cloudy with a slight chance of showers overnight. Lows 61 to 67.
MONDAY
Partly cloudy in the morning...becoming sunny. Highs 78 to 82.
MONDAY NIGHT
Mostly clear. A slight chance of showers overnight. Lows 59 to 66.
TUESDAY
Partly cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Highs 86 to 89.
TUESDAY NIGHT
Mostly clear. Lows 63 to 69.
WEDNESDAY
Mostly sunny. Highs around 90.

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 PM EDT  9/24/2026
Friday
25 SEP 2026
FULLERTON, CA 92837 weather forecast Day 1, 0 hours 11 PM 72° 72° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 81% 66°
Low 69° FULLERTON, CA 92837 weather forecast Day 1, 3 hours 2 AM 70° 70° Partly Cloudy   CALM 87% 66°
High 89° FULLERTON, CA 92837 weather forecast Day 1, 6 hours 5 AM 70° 70° Mostly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 87% 66°

Decreasing Clouds



FULLERTON, CA 92837 weather forecast Day 1, 9 hours 8 AM 71° 71° Mostly Cloudy   CALM 81% 65°
FULLERTON, CA 92837 weather forecast Day 1, 12 hours 11 AM 80° 82° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 58% 64°
FULLERTON, CA 92837 weather forecast Day 1, 15 hours 2 PM 87° 88° Clear SW   6 45% 63°
FULLERTON, CA 92837 weather forecast Day 1, 18 hours 5 PM 86° 87° Clear 0%

0% Thunder
( 0% severe)
W   7 46% 63°
FULLERTON, CA 92837 weather forecast Day 1, 21 hours 8 PM 77° 79° Partly Cloudy   CALM 62% 63°
Saturday
26 SEP 2026
FULLERTON, CA 92837 weather forecast Day 2, 0 hours 11 PM 73° 73° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 73% 64°
Low 70° FULLERTON, CA 92837 weather forecast Day 2, 3 hours 2 AM 72° 72° Mostly Cloudy   CALM 76% 64°
High 93° FULLERTON, CA 92837 weather forecast Day 2, 6 hours 5 AM 70° 70° Mostly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 81% 64°

Mostly Cloudy



FULLERTON, CA 92837 weather forecast Day 2, 9 hours 8 AM 72° 72° Mostly Cloudy   CALM 76% 64°
FULLERTON, CA 92837 weather forecast Day 2, 12 hours 11 AM 83° 83° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 47% 61°
FULLERTON, CA 92837 weather forecast Day 2, 15 hours 2 PM 90° 89° Partly Cloudy WSW   5 35% 59°
FULLERTON, CA 92837 weather forecast Day 2, 18 hours 5 PM 88° 87° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   7 36% 58°
FULLERTON, CA 92837 weather forecast Day 2, 21 hours 8 PM 79° 80° Mostly Cloudy   CALM 52% 60°

FULLERTON, CA extended weather forecast

Sunday
27 SEP 2026
Monday
28 SEP 2026
Tuesday
29 SEP 2026
Wednesday
30 SEP 2026
Thursday
1 OCT 2026
Low 68° Low 63° Low 59° Low 63° Low 64°
High 83° High 83° High 86° High 81° High 84°
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
2% Rain
Clear
9% Rain
Clear
4% Rain
Partly Cloudy
2% Rain
Mostly Cloudy
4% Rain
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