url:
Fullerton, California Weather Forecast
Fullerton, California Weather
your sport, your way
Air Sports Net on FacebookAir Sports Net on Google +Air Sports Net on TwitterReceive RSS UpdatesReceive Email Updates

Change location by the zip code or city,state: or search for other weather forecast locations in California by name.
Weather Forecast for Fullerton, California : Orange County
Issued: 2:24 am PST Dec 18, 2025 Latitude: 33.8702924 Longitude: -117.925338 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Clear on Overnight Morning Fog on Thursday Morning Fog on Friday Morning Fog on Saturday Morning Fog on Sunday Mostly Cloudy on Monday 20% chance of rain on Tuesday Rain on Wednesday
Low: 53°F High: 81°F High: 75°F High: 71°F High: 72°F High: 71°F High: 69°F High: 66°F
Low: 53°F Low: 53°F Low: 53°F Low: 53°F Low: 54°F Low: 56°F  
Mostly Clear Morning Fog Morning Fog Morning Fog Morning Fog Mostly Cloudy Rain Rain
-
Current Conditions at
FULLERTON - (KFUL)
52°
Clear
Mist
as of 1:53 AM PST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 3 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
3 MPH
060° Northeast
Cloud Level(s): Clear
Current Conditions at
LONG BEACH - (KLGB)
52°
Mostly Cloudy
Mist
as of 2:24 AM PST
Rel. Humidity: 100%
Dew Point: 52°F
Visibility: 2 Miles
Pressure: 29.94 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Broken at 400ft
Current Conditions at
SANTA ANA - (KSNA)
54°
Partly Cloudy
Mist
as of 2:40 AM PST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 3 Miles
Pressure: 29.95 in.
Flight Rule: MVFR
Wind Data
3 MPH
040° Northeast
Cloud Level(s): Scattered at 700ft
Current Conditions at
ONTARIO - (KONT)
55°
Clear
as of 1:53 AM PST
Rel. Humidity: 66%
Dew Point: 45°F
Visibility: 8 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
5 MPH
040° Northeast
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 53. East wind around 5 mph.

Morning Fog on Thursday Thursday... Patchy fog between 7am and 10am. Otherwise, sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 53. Calm wind becoming south around 5 mph after midnight.

Morning Fog on Friday Friday... Patchy fog before 10am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.

Patchy Fog on Friday Night Friday Night... Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 53. Calm wind.

Morning Fog on Saturday Saturday... Patchy fog before 10am. Otherwise, partly sunny, with a high near 71.

Patchy Fog on Saturday Night Saturday Night... Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 53.

Morning Fog on Sunday Sunday... Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 72.

Patchy Fog on Sunday Night Sunday Night... Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 53.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 71.

10% chance of rain Monday Night Monday Night... A slight chance of showers. Mostly cloudy, with a low around 54.

20% chance of rain Tuesday Tuesday... A chance of rain. Mostly cloudy, with a high near 69.

70% chance of rain Tuesday Night Tuesday Night... Rain likely. The rain could be heavy at times. Cloudy, with a low around 56.

Rain on Wednesday Wednesday... Rain. The rain could be heavy at times. Cloudy, with a high near 66.

Current Radar Image


Sun Almanac for Fullerton, California
Sunrise: 06:52 AM
Sunset: 4:46 PM
Civil Sunrise:06:24 AM
Civil Sunset: 5:13 PM
Nautical Sunrise: 05:53 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 05:22 AM
Astro Sunset: 6:15 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.