Castle Rock State Park Weather Forecast

    • 51
    • 57

    Rain

    • 52
    • 56

    Rain

    • 53
    • 58

    Rain

    • 51
    • 56

    Rain

    • 45
    • 54

    Rain

    • 44
    • 56

    Chance Rain

Today 22 Dec Santa Cruz Mountains

Areas of fog. Rain. Highs in the upper 50s. South Winds 5 to 15 Mph. Gusts up to 30 Mph in the morning.

Tonight 22 Dec Santa Cruz Mountains

Areas of fog. Rain likely. Lows around 50. South Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock State Park Temperature Statistics

December Temperature

San Jose, San Jose International Airport (13.7 miles)

  • Lowest 13 December, 2025

    37 °F

  • Average December

    50.5 °F

  • Highest 17 December, 2025

    70 °F

Climate (2020–Present)

San Jose, San Jose International Airport (13.7 miles)

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

  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    72.4 °F
Get WillyWeather+ to remove ads