Fullerton Weather Forecast

    • 41
    • 55

    Rain

    • 42
    • 57

    Becoming Sunny

    • 47
    • 65

    Partly Sunny

    • 51
    • 71

    Mostly Sunny

    • 54
    • 75

    Partly Sunny

    • 55
    • 74

    Partly Sunny

    • 56
    • 72

    Mostly Cloudy

Today 19 Feb Los Angeles County San Gabriel Valley

Rain. Highs in the lower to mid 50s. Southeast Winds 15 to 25 Mph shifting to the south 20 to 30 Mph in the afternoon.

Tonight 19 Feb Los Angeles County San Gabriel Valley

Mostly cloudy with a 30 percent chance of rain in the Evening, becoming partly cloudy after midnight. Lows around 40. West Winds around 15 Mph.

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Fullerton Temperature Statistics

February Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 13 February, 2026

    46.9 °F

  • Average February

    62.7 °F

  • Highest 4 February, 2026

    90.6 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    56.9 °F

  • Average 2021–2026

    66.2 °F

  • Average High 2021–2026

    76.5 °F
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