St. Leo's Weather Forecast

    • 53
    • 73

    Gradual Clearing

    • 55
    • 78

    Mostly Sunny

    • 60
    • 86

    Sunny

    • 60
    • 90

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

Today 27 Sep Santa Clara Valley Including San Jose

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the lower 70s. South Winds up to 5 Mph increasing to northwest 10 to 15 Mph in the afternoon.

Tonight 27 Sep Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming mostly cloudy. Lows in the lower 50s. Northwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. Leo's Temperature Statistics

September Temperature

San Jose, San Jose International Airport (1.9 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    70 °F

  • Highest 9 September, 2026

    97.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (1.9 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.8 °F
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