Old Gilroy Weather Forecast

    • 55
    • 79

    Increasing Clouds

    • 55
    • 75

    Partly Sunny

    • 54
    • 74

    Partly Sunny

    • 52
    • 78

    Partly Sunny

    • 52
    • 80

    Partly Sunny

    • 52
    • 82

    Mostly Sunny

Today 17 Jun Santa Clara Valley Including San Jose

Sunny. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 17 Jun Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. Southeast Winds 5 to 10 Mph.

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Old Gilroy Temperature Statistics

June Temperature

South County Airport of Santa Clara County (6.8 miles)

  • Lowest 7 June, 2026

    48.2 °F

  • Average June

    66.6 °F

  • Highest 11 June, 2026

    95 °F

Climate (2021–2026)

South County Airport of Santa Clara County (6.8 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    73.1 °F
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