Jewell Weather Forecast

    • 52
    • 73

    Becoming Sunny

    • 54
    • 82

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

    • 54
    • 78

    Partly Sunny

    • 55
    • 76

    Partly Sunny

    • 55
    • 80

    Mostly Sunny

Today 28 Sep Marin Coastal Range

Sunny. Patchy fog in the morning. Highs in the mid 70s. North Winds around 5 Mph. Becoming west in the afternoon.

Tonight 28 Sep Marin Coastal Range

Clear. Lows in the mid 50s. West Winds 5 to 10 Mph.

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Jewell Temperature Statistics

September Temperature

Novato / Gnoss Field (12.4 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    65.8 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (12.4 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.4 °F
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