Deer Park Weather Forecast

    • 52
    • 82

    Mostly Sunny

    • 53
    • 76

    Increasing Clouds

    • 56
    • 72

    Partly Sunny

    • 56
    • 74

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 55
    • 82

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

Today 14 Sep North Bay Interior Valleys

Sunny. Highs in the mid 70s to lower 90s. West Winds 10 to 15 Mph.

Tonight 14 Sep North Bay Interior Valleys

Mostly clear except patchy fog after midnight. Lows in the 50s. West Winds 10 to 15 Mph. Becoming southwest up to 5 Mph after midnight.

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Deer Park Temperature Statistics

September Temperature

Novato / Gnoss Field (11.8 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    67.8 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (11.8 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
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