Grant Park Weather Forecast

    • 60
    • 91

    Increasing Clouds

    • 57
    • 85

    Becoming Sunny

    • 56
    • 78

    Mostly Sunny

    • 55
    • 78

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

    • 56
    • 78

    Mostly Sunny

Today 10 Sep San Francisco Bay Shoreline

Partly cloudy. Highs in the 70s to upper 80s. West Winds 10 to 20 Mph.

Tonight 10 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 60s. West Winds 5 to 15 Mph.

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  • Temperature Real-Time

Grant Park Temperature Statistics

September Temperature

San Jose, San Jose International Airport (8.1 miles)

  • Lowest 5 September, 2026

    54.6 °F

  • Average September

    69.7 °F

  • Highest 8 September, 2026

    91.9 °F

Climate (2021–2026)

San Jose, San Jose International Airport (8.1 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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