Angwin Weather Forecast

    • 56
    • 79

    Sunny

    • 62
    • 81

    Sunny

    • 65
    • 88

    Sunny

    • 64
    • 88

    Sunny

    • 62
    • 89

    Sunny

    • 59
    • 85

    Mostly Sunny

    • 58
    • 79

    Mostly Sunny

Today 13 Sep North Bay Interior Mountains

Sunny. Highs in the lower 70s to mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 13 Sep North Bay Interior Mountains

Clear. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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Angwin Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 miles)

  • Lowest 7 September, 2025

    48.9 °F

  • Average September

    65.6 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.8 °F
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