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

61°F

16°C

Humidity 83%
Wind Speed SSW 0 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 56°F (13°C)
Visibility NA
Last update 22 May 04:38 AM PDT
Extended Forecast for

Fullerton CA

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 77. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 77 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph becoming light south in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 77. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 77 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 76. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 76 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 56.

    Low: 56 °F

    Increasing
    Clouds

  • Memorial Day

    Memorial Day: Partly sunny, then gradually becoming sunny, with a high near 73.

    High: 73 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 56.

    Low: 56 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 70.

    High: 70 °F

    Decreasing
    Clouds

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 77. Light south wind becoming southwest 5 to 10 mph in the morning.
Tonight
Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph becoming light south in the evening.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 77. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Saturday Night
Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 76. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 56.
Memorial Day
Partly sunny, then gradually becoming sunny, with a high near 73.
Monday Night
Increasing clouds, with a low around 56.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 70.
Tuesday Night
Increasing clouds, with a low around 56.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.89°N 117.94°W (Elev. 197 ft)
Last Update:
12:49 am PDT May 22, 2026
Forecast Valid:
4am PDT May 22, 2026-6pm PDT May 28, 2026
 
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