National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

FW0063 Fullerton CSU (F0063)

Lat: 33.8805°NLon: 117.88417°WElev: 243.01ft.

NA

68°F

20°C

Humidity 81%
Wind Speed W 2 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 62°F (17°C)
Visibility NA
Last update 05 Jul 01:38 AM PDT
Extended Forecast for

Fullerton CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm after midnight.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 85.

    High: 85 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 65.

    Low: 65 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 89.

    High: 89 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. Calm wind.
Sunday
Mostly sunny, with a high near 89. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 88. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm after midnight.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 85.
Tuesday Night
Increasing clouds, with a low around 65.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 87.
Thursday Night
Increasing clouds, with a low around 66.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.87°N 117.93°W (Elev. 184 ft)
Last Update:
12:55 am PDT Jul 5, 2026
Forecast Valid:
1am PDT Jul 5, 2026-6pm PDT Jul 11, 2026
 
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Additional Resources

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Hourly Weather Forecast

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Chance of Precipitation