Jack London State Historic Park Weather Forecast

    • 41
    • 60

    Chance Rain

    • 44
    • 69

    Mostly Sunny

    • 46
    • 66

    Mostly Cloudy

    • 45
    • 60

    Mostly Cloudy

    • 43
    • 62

    Partly Sunny

    • 44
    • 64

    Partly Sunny

Today 22 Apr North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. A chance of Showers and a slight chance of Thunderstorms. Some Thunderstorms may produce small hail. Highs in the upper 50s to mid 60s. East Winds up to 5 Mph. Becoming south in the afternoon.

Tonight 22 Apr North Bay Interior Valleys

Mostly clear except patchy fog after midnight. Lows in the 40s to lower 50s. Northwest Winds up to 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jack London State Historic Park Temperature Statistics

April Temperature

Petaluma Municipal Airport (6.8 miles)

  • Lowest 18 April, 2026

    35.6 °F

  • Average April

    56.3 °F

  • Highest 5 April, 2026

    84.2 °F

Climate (2021–Present)

Petaluma Municipal Airport (6.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    44.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.6 °F
Get WillyWeather+ to remove ads