South Hero Weather Forecast

    • 34
    • 42

    Rain

    • 30
    • 41

    Chance Rain

    • 37
    • 40

    Rain/Snow Likely

    • 41
    • 60

    Rain Likely

    • 45
    • 54

    Chance Rain

Today 31 Mar Grand Isle

Cloudy. Rain late this Morning, then a chance of rain this afternoon. Near steady temperature around 40. North Winds around 10 Mph. Chance of rain 80 percent.

Tonight 31 Mar Grand Isle

Rain with a chance of Thunderstorms. Lows in the lower 30s. Light and variable Winds. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Hero Temperature Statistics

March Temperature

Plattsburgh International Airport (6.8 miles)

  • Lowest 2 March, 2026

    -9 °F

  • Average March

    32.2 °F

  • Highest 9 March, 2026

    64 °F

Climate (2021–Present)

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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