Gilroy Weather Forecast

    • 56
    • 82

    Gradual Clearing

    • 56
    • 87

    Partly Sunny

    • 56
    • 87

    Partly Sunny

    • 56
    • 85

    Partly Sunny

    • 56
    • 85

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

Today 17 Aug Santa Clara Valley Including San Jose

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 70s to mid 80s. Light Winds. Becoming northwest 10 to 15 Mph in the afternoon.

Tonight 17 Aug Santa Clara Valley Including San Jose

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. Northwest Winds 10 to 15 Mph decreasing to around 5 Mph after midnight.

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Gilroy Temperature Statistics

August Temperature

South County Airport of Santa Clara County (5 miles)

  • Lowest 1 August, 2026

    55.4 °F

  • Average August

    67.8 °F

  • Highest 2 August, 2026

    96.8 °F

Climate (2021–2026)

South County Airport of Santa Clara County (5 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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