Hidden Valley Park Weather Forecast

    • 54
    • 81

    Mostly Sunny

    • 56
    • 90

    Mostly Sunny

    • 55
    • 91

    Mostly Sunny

    • 55
    • 86

    Partly Sunny

    • 56
    • 85

    Partly Sunny

    • 57
    • 89

    Mostly Sunny

Today 28 Sep North Bay Interior Valleys

Sunny. Patchy fog in the morning. Highs in the lower 70s to mid 80s. South Winds up to 5 Mph increasing to southwest 10 to 15 Mph in the afternoon.

Tonight 28 Sep North Bay Interior Valleys

Mostly clear. Lows in the 50s. Northwest Winds 5 to 10 Mph.

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Hidden Valley Park Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (6.2 miles)

  • Lowest 5 September, 2026

    46.7 °F

  • Average September

    67.2 °F

  • Highest 10 September, 2026

    101.6 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (6.2 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    72.9 °F
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