Fullerton Weather Forecast

    • 59
    • 63

    Rain Showers

    • 61
    • 66

    Rain Showers Likely

    • 61
    • 72

    Chance Rain Showers

    • 61
    • 73

    Mostly Cloudy

    • 62
    • 72

    Rain Showers

    • 56
    • 67

    Chance Rain Showers

    • 55
    • 64

    Chance Rain Showers

Today 24 Sep Nance

Partly cloudy with a 30 percent chance of Showers. Highs in the mid 60s.

Tonight 24 Sep Nance

Showers, slight chance of Thunderstorms and patchy fog. Lows in the upper 50s. Light Winds. Chance of precipitation 90 percent.

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  • Temperature Real-Time

Fullerton Temperature Statistics

September Temperature

Albion Municipal Airport (25.5 miles)

  • Lowest 10 September, 2026

    50.4 °F

  • Average September

    70.9 °F

  • Highest 2 September, 2026

    93.4 °F

Climate (2021–2026)

Albion Municipal Airport (25.5 miles)

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  • Average Low 2021–2026

    38.9 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    63 °F
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