Jewell Weather Forecast

    • 51
    • 68

    Decreasing Clouds

    • 51
    • 71

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 53
    • 78

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

    • 52
    • 77

    Partly Sunny

Today 17 Aug Marin Coastal Range

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s. West Winds 5 to 15 Mph.

Tonight 17 Aug Marin Coastal Range

Mostly clear. Lows in the mid 50s. West Winds 10 to 15 Mph.

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Jewell Temperature Statistics

August Temperature

Novato / Gnoss Field (12.4 miles)

  • Lowest 2 August, 2025

    48.2 °F

  • Average August

    64.7 °F

  • Highest 8 August, 2025

    96.8 °F

Climate (2020–Present)

Novato / Gnoss Field (12.4 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    72.6 °F
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