Forecast

    Forecast for Fullerton, CA | Forecast Periods: 14
    Monday
    Mar 16
    2026

    Fullerton, CA

    Updated: 11:05 AM PDT

    89°F

    Sunny

    5 mph W
    Precipitation: 0%

    Sunny, with a high near 89. West wind 5 to 10 mph.

    Hourly Forecast

    MON14:00
    88°F
    Sunny
    Dewpoint:10.6°Precip:0%Humidity:28%Wind:5 mph W
    MON15:00
    89°F
    Sunny
    Dewpoint:10.6°Precip:0%Humidity:27%Wind:10 mph W
    MON16:00
    88°F
    Sunny
    Dewpoint:10°Precip:0%Humidity:27%Wind:10 mph W
    TUE17:00
    87°F
    Sunny
    Dewpoint:10°Precip:0%Humidity:28%Wind:10 mph W
    TUE18:00
    83°F
    Mostly Clear
    Dewpoint:11.1°Precip:0%Humidity:34%Wind:10 mph W
    TUE19:00
    77°F
    Mostly Clear
    Dewpoint:11.1°Precip:0%Humidity:41%Wind:5 mph W
    TUE20:00
    73°F
    Clear
    Dewpoint:11.1°Precip:0%Humidity:47%Wind:5 mph W
    TUE21:00
    70°F
    Clear
    Dewpoint:11.7°Precip:0%Humidity:54%Wind:0 mph
    TUE22:00
    68°F
    Clear
    Dewpoint:12.2°Precip:0%Humidity:61%Wind:5 mph SW
    TUE23:00
    66°F
    Clear
    Dewpoint:11.7°Precip:0%Humidity:62%Wind:0 mph
    TUE00:00
    65°F
    Clear
    Dewpoint:11.7°Precip:0%Humidity:66%Wind:0 mph
    TUE01:00
    64°F
    Clear
    Dewpoint:11.1°Precip:0%Humidity:66%Wind:0 mph
    TUE02:00
    63°F
    Mostly Clear
    Dewpoint:10.6°Precip:0%Humidity:65%Wind:0 mph
    TUE03:00
    62°F
    Mostly Clear
    Dewpoint:10°Precip:0%Humidity:64%Wind:0 mph
    TUE04:00
    62°F
    Mostly Clear
    Dewpoint:9.4°Precip:0%Humidity:62%Wind:0 mph
    TUE05:00
    62°F
    Mostly Clear
    Dewpoint:8.9°Precip:0%Humidity:62%Wind:0 mph
    TUE06:00
    62°F
    Sunny
    Dewpoint:8.9°Precip:0%Humidity:61%Wind:0 mph
    TUE07:00
    61°F
    Sunny
    Dewpoint:8.3°Precip:0%Humidity:60%Wind:0 mph
    TUE08:00
    64°F
    Sunny
    Dewpoint:8.3°Precip:0%Humidity:54%Wind:0 mph
    TUE09:00
    71°F
    Sunny
    Dewpoint:10°Precip:0%Humidity:47%Wind:0 mph
    TUE10:00
    79°F
    Sunny
    Dewpoint:10.6°Precip:0%Humidity:38%Wind:0 mph
    TUE11:00
    86°F
    Sunny
    Dewpoint:10°Precip:0%Humidity:28%Wind:0 mph
    TUE12:00
    90°F
    Sunny
    Dewpoint:9.4°Precip:0%Humidity:25%Wind:5 mph W
    TUE13:00
    94°F
    Sunny
    Dewpoint:9.4°Precip:0%Humidity:22%Wind:5 mph W

    Extended Forecast

    Tonight

    Tue, Mar 17
    61°F
    Mostly Clear
    0 mph SE
    Precipitation: 0%
    Mostly clear, with a low around 61. Southeast wind 0 to 10 mph.

    Tuesday

    Tue, Mar 17
    97°F
    Sunny
    0 mph NW
    Precipitation: 0%
    Sunny, with a high near 97. Northwest wind 0 to 10 mph.

    Tuesday Night

    Wed, Mar 18
    63°F
    Mostly Clear
    0 mph W
    Precipitation: 0%
    Mostly clear, with a low around 63. West wind 0 to 10 mph.

    Wednesday

    Wed, Mar 18
    95°F
    Sunny
    0 mph S
    Precipitation: 0%
    Sunny, with a high near 95. South wind 0 to 10 mph.

    Wednesday Night

    Thu, Mar 19
    62°F
    Clear
    0 mph SW
    Precipitation: 0%
    Clear, with a low around 62.

    Thursday

    Thu, Mar 19
    94°F
    Sunny
    0 mph W
    Precipitation: 0%
    Sunny, with a high near 94.

    Thursday Night

    Fri, Mar 20
    64°F
    Clear
    0 mph S
    Precipitation: 0%
    Clear, with a low around 64.

    Friday

    Fri, Mar 20
    94°F
    Sunny
    0 mph SE
    Precipitation: 0%
    Sunny, with a high near 94.

    Friday Night

    Sat, Mar 21
    62°F
    Mostly Clear
    0 mph S
    Precipitation: 0%
    Mostly clear, with a low around 62.

    Saturday

    Sat, Mar 21
    88°F
    Sunny
    0 mph S
    Precipitation: 0%
    Sunny, with a high near 88.

    Saturday Night

    Sun, Mar 22
    59°F
    Partly Cloudy
    0 mph S
    Precipitation: 0%
    Partly cloudy, with a low around 59.

    Sunday

    Sun, Mar 22
    83°F
    Partly Sunny
    0 mph S
    Precipitation: 0%
    Partly sunny, with a high near 83.

    Sunday Night

    Mon, Mar 23
    58°F
    Mostly Cloudy
    0 mph S
    Precipitation: 0%
    Mostly cloudy, with a low around 58.

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