Fullerton Weather Forecast

    • 56
    • 76

    Slight Chance Thunderstorms

    • 58
    • 79

    Rain Showers

    • 53
    • 73

    Rain Showers Likely

    • 54
    • 73

    Mostly Cloudy

    • 53
    • 75

    Chance Rain Showers

    • 56
    • 78

    Chance Thunderstorms

Today 19 Jun Nance

Mostly cloudy with chance of Showers and slight chance of Thunderstorms. Highs in the mid 70s. Light Winds. Chance of precipitation 40 percent.

Tonight 19 Jun Nance

Mostly clear. Slight chance of Showers and Thunderstorms in the Evening, then slight chance of Showers after midnight. Lows in the mid 50s. Light Winds. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fullerton Temperature Statistics

June Temperature

Albion Municipal Airport (25.5 miles)

  • Lowest 15 June, 2026

    45.1 °F

  • Average June

    71.4 °F

  • Highest 9 June, 2026

    89.1 °F

Climate (2021–2026)

Albion Municipal Airport (25.5 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    63 °F
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