Jack London State Historic Park Weather Forecast

    • 37
    • 58

    Partly Sunny

    • 38
    • 58

    Mostly Sunny

    • 40
    • 60

    Sunny

    • 43
    • 61

    Mostly Sunny

    • 44
    • 63

    Mostly Sunny

    • 42
    • 62

    Mostly Sunny

    • 41
    • 61

    Mostly Sunny

Today 11 Jan North Bay Interior Valleys

Mostly cloudy late in the morning then becoming partly cloudy. Highs in the mid 50s to lower 60s. Northeast Winds 5 to 10 Mph. Becoming west in the afternoon.

Tonight 11 Jan North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly clear. Patchy fog after midnight. Lows in the mid 30s to upper 40s. North Winds up to 5 Mph.

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Jack London State Historic Park Temperature Statistics

January Temperature

Petaluma Municipal Airport (6.8 miles)

  • Lowest 9 January, 2026

    30.2 °F

  • Average January

    50.1 °F

  • Highest 3 January, 2026

    60.8 °F

Climate (2021–Present)

Petaluma Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    44.6 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    68.6 °F
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