Lake Sunapee Weather Forecast

    • 54
    • 73

    Sunny

    • 58
    • 79

    Sunny

    • 61
    • 82

    Mostly Sunny

    • 61
    • 81

    Mostly Cloudy

    • 61
    • 79

    Mostly Cloudy

    • 61
    • 77

    Isolated Thunderstorms

Today 2 Aug Sullivan

Sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 2 Aug Sullivan

Clear, hazy. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

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Lake Sunapee Temperature Statistics

August Temperature

Lebanon Municipal Airport (21.1 miles)

  • Lowest

  • Average August

  • Highest

Climate (2020–Present)

Lebanon Municipal Airport (21.1 miles)

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  • Average Low 2020–2025

    38.2 °F
  • Average 2020–2025

    48.8 °F
  • Average High 2020–2025

    59.8 °F
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