San Geronimo Weather Forecast

    • 48
    • 66

    Becoming Sunny

    • 49
    • 71

    Mostly Sunny

    • 49
    • 70

    Partly Sunny

    • 51
    • 68

    Partly Sunny

    • 50
    • 70

    Partly Sunny

    • 51
    • 75

    Partly Sunny

Today 4 Jul Marin Coastal Range

Sunny. Highs in the upper 60s. West Winds 15 to 20 Mph with Gusts to around 35 Mph.

Tonight 4 Jul Marin Coastal Range

Mostly clear. Lows around 50. West Winds 10 to 20 Mph. Gusts up to 35 Mph in the evening.

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San Geronimo Temperature Statistics

July Temperature

Novato / Gnoss Field (10.6 miles)

  • Lowest 1 July, 2025

    53.6 °F
  • Average July

    62.2 °F
  • Highest 1 July, 2025

    86 °F

Climate (2020–Present)

Novato / Gnoss Field (10.6 miles)

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  • Average Low 2020–2025

    45.9 °F
  • Average 2020–2025

    57.6 °F
  • Average High 2020–2025

    72.7 °F
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