Jewell Weather Forecast

    • 52
    • 70

    Becoming Sunny

    • 54
    • 73

    Mostly Cloudy

    • 54
    • 73

    Partly Sunny

    • 53
    • 71

    Partly Sunny

    • 53
    • 70

    Partly Sunny

    • 53
    • 72

    Mostly Sunny

Today 17 Aug Marin Coastal Range

Mostly cloudy in the morning then becoming sunny. Highs in the lower to mid 70s. West Winds 5 to 10 Mph.

Tonight 17 Aug Marin Coastal Range

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph.

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Jewell Temperature Statistics

August Temperature

Novato / Gnoss Field (12.4 miles)

  • Lowest 10 August, 2026

    51.8 °F

  • Average August

    66.1 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Novato / Gnoss Field (12.4 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
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