Gilroy Weather Forecast

    • 53
    • 96

    Increasing Clouds

    • 46
    • 84

    Becoming Sunny

    • 47
    • 82

    Mostly Sunny

    • 50
    • 83

    Mostly Sunny

    • 49
    • 86

    Sunny

    • 47
    • 81

    Mostly Sunny

    • 48
    • 83

    Partly Sunny

Today 20 Mar Santa Clara Valley Including San Jose

Sunny. Highs in the lower 90s. Northwest Winds 5 to 10 Mph.

Tonight 20 Mar Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gilroy Temperature Statistics

March Temperature

South County Airport of Santa Clara County (5 miles)

  • Lowest 7 March, 2026

    37.4 °F

  • Average March

    59.2 °F

  • Highest 18 March, 2026

    93.2 °F

Climate (2021–Present)

South County Airport of Santa Clara County (5 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    73 °F
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