Fullerton Weather Forecast

    • 63
    • 91

    Slight Chance Thunderstorms

    • 57
    • 74

    Chance Thunderstorms

    • 55
    • 73

    Rain Showers Likely

    • 61
    • 81

    Mostly Sunny

    • 66
    • 86

    Mostly Sunny

    • 70
    • 91

    Mostly Sunny

    • 71
    • 94

    Partly Sunny

Today 3 Aug Nance

Partly cloudy. South Winds around 20 Mph with Gusts to around 35 Mph.

Tonight 3 Aug Nance

Partly cloudy in the evening then becoming mostly cloudy. A 30 percent chance of Showers and Thunderstorms. Lows in the lower 60s. Southeast Winds 10 to 20 Mph shifting to the north 10 to 15 Mph after midnight.

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Fullerton Temperature Statistics

August Temperature

Albion Municipal Airport (25.5 miles)

  • Lowest 1 August, 2026

    58.6 °F

  • Average August

    70.8 °F

  • Highest 1 August, 2026

    83.1 °F

Climate (2021–2026)

Albion Municipal Airport (25.5 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    63.1 °F
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