Southeast Anaheim Weather Forecast

    • 69
    • 88

    Increasing Clouds

    • 71
    • 91

    Increasing Clouds

    • 68
    • 86

    Partly Sunny

    • 66
    • 81

    Mostly Sunny

    • 69
    • 87

    Mostly Sunny

    • 69
    • 88

    Mostly Sunny

    • 69
    • 88

    Partly Sunny

Today 25 Sep Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 85 to 88.

Tonight 25 Sep Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Lows 65 to 69. Areas of Winds west to 10 Mph this evening becoming light.

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Southeast Anaheim Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    77.6 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    76.9 °F
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