Grant Lake Weather Forecast

    • 55
    • 77

    Sunny

    • 49
    • 78

    Increasing Clouds

    • 48
    • 65

    Partly Sunny

    • 49
    • 68

    Partly Sunny

    • 50
    • 69

    Mostly Cloudy

    • 48
    • 63

    Chance Rain

    • 49
    • 61

    Chance Rain

Today 20 Oct Eastern Santa Clara Hills

Sunny. Highs in the lower 70s. Northwest Winds around 5 Mph.

Tonight 20 Oct Eastern Santa Clara Hills

Clear. Lows in the 50s to lower 60s. Northeast Winds around 5 Mph. Becoming southeast after midnight.

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Grant Lake Temperature Statistics

October Temperature

South County Airport of Santa Clara County (19.3 miles)

  • Lowest 12 October, 2025

    46.4 °F

  • Average October

    61.8 °F

  • Highest 7 October, 2025

    89.6 °F

Climate (2020–Present)

South County Airport of Santa Clara County (19.3 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    72.9 °F
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