Grant Lake Weather Forecast

    • 45
    • 72

    Partly Sunny

    • 43
    • 66

    Partly Sunny

    • 44
    • 66

    Mostly Sunny

    • 45
    • 69

    Sunny

    • 48
    • 71

    Sunny

    • 48
    • 72

    Mostly Sunny

Today 31 Jan Eastern Santa Clara Hills

Partly cloudy. Highs in the upper 60s. Southeast Winds around 5 Mph.

Tonight 31 Jan Eastern Santa Clara Hills

Partly cloudy. Lows in the 40s to lower 50s. Southwest Winds around 5 Mph. Becoming northwest after midnight.

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Grant Lake Temperature Statistics

January Temperature

South County Airport of Santa Clara County (19.3 miles)

  • Lowest 9 January, 2026

    32 °F

  • Average January

    50.2 °F

  • Highest 16 January, 2026

    71.6 °F

Climate (2021–Present)

South County Airport of Santa Clara County (19.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    72.8 °F
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