Summerdale Weather Forecast

    • 47
    • 65

    Chance Rain

    • 42
    • 64

    Partly Sunny

    • 45
    • 66

    Partly Sunny

    • 47
    • 69

    Mostly Cloudy

    • 47
    • 69

    Mostly Cloudy

    • 47
    • 67

    Mostly Cloudy

Today 27 Jan Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming mostly cloudy. A chance of rain in the afternoon. Highs in the mid 60s. Southeast Winds around 5 Mph. Becoming southwest in the afternoon.

Tonight 27 Jan Santa Clara Valley Including San Jose

Mostly cloudy. A chance of rain. Patchy fog after midnight. Lows in the mid 40s. South Winds around 5 Mph in the evening. Becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Summerdale Temperature Statistics

January Temperature

San Jose / Reid / Hillv (4.3 miles)

  • Lowest 10 January, 2026

    32 °F

  • Average January

    54.9 °F

  • Highest 16 January, 2026

    71.6 °F

Climate (2021–Present)

San Jose / Reid / Hillv (4.3 miles)

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

  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    63.5 °F

  • Average High 2021–2026

    72.1 °F
Get WillyWeather+ to remove ads