Big Basin Redwoods State Park Weather Forecast

    • 52
    • 74

    Increasing Clouds

    • 54
    • 69

    Mostly Cloudy

    • 52
    • 73

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

    • 55
    • 77

    Partly Sunny

    • 54
    • 74

    Partly Sunny

Today 15 Sep Santa Cruz Mountains

Sunny. Highs in the 60s to upper 70s. Light Winds. Becoming southwest around 5 Mph in the afternoon.

Tonight 15 Sep Santa Cruz Mountains

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Basin Redwoods State Park Temperature Statistics

September Temperature

San Jose, San Jose International Airport (20.5 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    71.5 °F

  • Highest 9 September, 2026

    97.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (20.5 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.8 °F
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