Nicasio Reservoir Weather Forecast

    • 51
    • 72

    Patchy Fog

    • 51
    • 67

    Mostly Cloudy

    • 50
    • 67

    Fog

    • 50
    • 69

    Areas Fog

    • 53
    • 75

    Areas Fog

    • 52
    • 77

    Areas Fog

Today 4 Jul Marin Coastal Range

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 60s to mid 70s. Southwest Winds around 5 Mph.

Tonight 4 Jul Marin Coastal Range

Partly cloudy. Lows in the lower 50s. Southwest Winds around 5 Mph.

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Nicasio Reservoir Temperature Statistics

July Temperature

Novato / Gnoss Field (10.6 miles)

  • Lowest 1 July, 2026

    50 °F

  • Average July

    61.9 °F

  • Highest 1 July, 2026

    80.6 °F

Climate (2021–2026)

Novato / Gnoss Field (10.6 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    72.5 °F
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