Big Signal Peak Weather Forecast

    • 58
    • 65

    Mostly Sunny

    • 64
    • 71

    Sunny

    • 63
    • 74

    Sunny

    • 62
    • 73

    Sunny

    • 62
    • 72

    Mostly Sunny

    • 59
    • 68

    Mostly Sunny

Today 14 Sep Northeastern Mendocino Interior

Sunny. Highs 71 to 86.

Tonight 14 Sep Northeastern Mendocino Interior

Clear. Lows 49 to 59.

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Big Signal Peak Temperature Statistics

September Temperature

Ukiah Municipal Airport (27.3 miles)

  • Lowest 7 September, 2025

    50 °F

  • Average September

    69.5 °F

  • Highest 2 September, 2025

    102.9 °F

Climate (2020–Present)

Ukiah Municipal Airport (27.3 miles)

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  • Average Low 2020–2025

    46.8 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    76.3 °F
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