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

FW0063 Fullerton CSU (F0063)

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

NA

67°F

19°C

Humidity 67%
Wind Speed SSE 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 56°F (13°C)
Visibility NA
Last update 06 Apr 09:38 AM PDT
Extended Forecast for

Fullerton CA

  • Today

    Today: Patchy fog before 11am. Otherwise, sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Southwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 79 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 58.

    Low: 58 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 78.

    High: 78 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 11am. Partly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Increasing clouds, with a low around 57. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 80. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 58.
Thursday
Mostly cloudy, with a high near 78.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
A slight chance of showers after 11am. Partly sunny, with a high near 75.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after 11pm. Partly cloudy, with a low around 56.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.87°N 117.91°W (Elev. 184 ft)
Last Update:
1:53 am PDT Apr 6, 2026
Forecast Valid:
9am PDT Apr 6, 2026-6pm PDT Apr 12, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation