South Hero Weather Forecast

    • 60
    • 80

    Chance Thunderstorms

    • 56
    • 75

    Rain Showers

    • 46
    • 62

    Rain Showers

    • 44
    • 56

    Slight Chance Rain Showers

    • 45
    • 57

    Mostly Cloudy

    • 46
    • 61

    Chance Rain Showers

Today 16 May Grand Isle

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 70s. South Winds around 10 Mph. Chance of rain 50 percent.

Tonight 16 May Grand Isle

Partly cloudy. A chance of Showers and Thunderstorms, mainly until midnight. Lows around 60. South Winds around 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Hero Temperature Statistics

May Temperature

Plattsburgh International Airport (6.8 miles)

  • Lowest 1 May, 2025

    30 °F

  • Average May

    55.4 °F

  • Highest 13 May, 2025

    79 °F

Climate (2020–Present)

Plattsburgh International Airport (6.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    47.7 °F

  • Average High 2020–2025

    56.2 °F
Get WillyWeather+ to remove ads