Nicasio Reservoir Weather Forecast

    • 53
    • 71

    Decreasing Clouds

    • 54
    • 78

    Partly Sunny

    • 53
    • 78

    Partly Sunny

    • 53
    • 71

    Mostly Cloudy

    • 53
    • 72

    Mostly Cloudy

    • 54
    • 76

    Partly Sunny

    • 53
    • 77

    Partly Sunny

Today 21 Aug Marin Coastal Range

Partly cloudy. Highs in the lower 70s. West Winds 5 to 10 Mph.

Tonight 21 Aug Marin Coastal Range

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nicasio Reservoir Temperature Statistics

August Temperature

Novato / Gnoss Field (10.6 miles)

  • Lowest 10 August, 2026

    51.8 °F

  • Average August

    65.8 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Novato / Gnoss Field (10.6 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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