South Los Altos Weather Forecast

    • 61
    • 80

    Increasing Clouds

    • 63
    • 79

    Slight Chance Rain Showers

    • 60
    • 76

    Slight Chance Rain Showers

    • 59
    • 76

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 58
    • 79

    Mostly Sunny

Today 7 Sep San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming sunny. Highs in the mid 70s to lower 80s. Southwest Winds up to 5 Mph increasing to northwest 10 to 20 Mph in the afternoon.

Tonight 7 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming mostly cloudy. Lows in the lower 60s. West Winds 10 to 15 Mph decreasing to around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Los Altos Temperature Statistics

September Temperature

San Jose, San Jose International Airport (7.5 miles)

  • Lowest 3 September, 2025

    60.1 °F

  • Average September

    70.5 °F

  • Highest 1 September, 2025

    89.1 °F

Climate (2020–Present)

San Jose, San Jose International Airport (7.5 miles)

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  • Average Low 2020–2025

    51.8 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    72.6 °F
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