South Hero Weather Forecast

    • 62
    • 78

    Rain Showers

    • 57
    • 79

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 63
    • 82

    Chance Rain Showers

    • 60
    • 80

    Rain Showers

    • 57
    • 76

    Chance Rain Showers

    • 59
    • 77

    Partly Sunny

Today 19 Aug Grand Isle

Partly sunny this Morning, then mostly cloudy with Showers likely with a chance of Thunderstorms this afternoon. Highs in the upper 70s. South Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 19 Aug Grand Isle

Isolated Thunderstorms until midnight. Partly cloudy with scattered Showers. Patchy dense fog after midnight. Lows in the lower 60s. West Winds around 10 Mph, becoming southwest after midnight. Chance of rain 50 percent.

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South Hero Temperature Statistics

August Temperature

Plattsburgh International Airport (6.8 miles)

  • Lowest 16 August, 2026

    50 °F

  • Average August

    70.6 °F

  • Highest 5 August, 2026

    84.9 °F

Climate (2021–2026)

Plattsburgh International Airport (6.8 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    55.9 °F
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