Sunapee Weather Forecast

    • 43
    • 54

    Decreasing Clouds

    • 54
    • 72

    Partly Sunny

    • 43
    • 75

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 60
    • 85

    Slight Chance Thunderstorms

    • 49
    • 79

    Chance Rain Showers

    • 43
    • 63

    Partly Sunny

Today 15 May Sullivan

Mostly cloudy with a 50 percent chance of rain. Highs in the upper 50s. Light and variable Winds.

Tonight 15 May Sullivan

Partly cloudy. Lows in the lower 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunapee Temperature Statistics

May Temperature

Lebanon Municipal Airport (19.3 miles)

  • Lowest 9 May, 2026

    30.9 °F

  • Average May

    50.3 °F

  • Highest 5 May, 2026

    84 °F

Climate (2021–Present)

Lebanon Municipal Airport (19.3 miles)

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  • Average Low 2021–2026

    38 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    59.7 °F
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