Glen Ellen Weather Forecast

    • 55
    • 95

    Sunny

    • 56
    • 94

    Mostly Sunny

    • 60
    • 95

    Mostly Cloudy

    • 58
    • 96

    Mostly Sunny

    • 58
    • 94

    Mostly Sunny

    • 58
    • 93

    Mostly Sunny

Today 30 Sep North Bay Interior Valleys

Sunny. Highs in the upper 70s to mid 90s. South Winds 5 to 10 Mph.

Tonight 30 Sep North Bay Interior Valleys

Clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the 50s to lower 60s. South Winds 5 to 10 Mph.

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Glen Ellen Temperature Statistics

September Temperature

Petaluma Municipal Airport (8.1 miles)

  • Lowest 7 September, 2026

    44.6 °F

  • Average September

    63.7 °F

  • Highest 9 September, 2026

    96.8 °F

Climate (2021–2026)

Petaluma Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    44.7 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.5 °F
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