Lowlanders Weather Forecast

    • 54
    • 72

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

    • 56
    • 79

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 56
    • 78

    Partly Sunny

Today 13 Sep Santa Clara Valley Including San Jose

Sunny. Highs in the 70s. Northwest Winds 15 to 20 Mph.

Tonight 13 Sep Santa Clara Valley Including San Jose

Mostly clear. Lows in the mid 50s. Northwest Winds 5 to 15 Mph with Gusts to around 30 Mph. Becoming southwest up to 5 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lowlanders Temperature Statistics

September Temperature

San Jose, San Jose International Airport (5.6 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    71.9 °F

  • Highest 9 September, 2026

    97.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (5.6 miles)

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

  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.8 °F
Get WillyWeather+ to remove ads