Joseph D. Grant County Park Weather Forecast

    • 43
    • 68

    Mostly Sunny

    • 53
    • 68

    Becoming Sunny

    • 51
    • 75

    Sunny

    • 55
    • 81

    Sunny

    • 56
    • 84

    Mostly Sunny

    • 54
    • 84

    Sunny

    • 52
    • 81

    Mostly Sunny

Today 16 May Eastern Santa Clara Hills

Sunny. Highs in the mid 60s. Northwest Winds 10 to 15 Mph.

Tonight 16 May Eastern Santa Clara Hills

Mostly clear. Lows in the 40s. Northwest Winds 10 to 20 Mph.

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Joseph D. Grant County Park Temperature Statistics

May Temperature

South County Airport of Santa Clara County (18.6 miles)

  • Lowest 4 May, 2026

    46.4 °F

  • Average May

    61.1 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

South County Airport of Santa Clara County (18.6 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    73.1 °F
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