Sunapee Weather Forecast

    • 64
    • 77

    Rain Showers Likely

    • 62
    • 74

    Chance Rain Showers

    • 59
    • 77

    Partly Sunny

    • 58
    • 79

    Chance Rain Showers

    • 53
    • 76

    Slight Chance Rain Showers

    • 54
    • 76

    Mostly Sunny

    • 57
    • 77

    Slight Chance Rain Showers

Today 16 Aug Sullivan

Partly sunny. Highs in the upper 70s. Light and variable Winds.

Tonight 16 Aug Sullivan

Mostly cloudy. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the lower 60s. South Winds around 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunapee Temperature Statistics

August Temperature

Lebanon Municipal Airport (19.3 miles)

  • Lowest 14 August, 2026

    53.1 °F

  • Average August

    71.5 °F

  • Highest 6 August, 2026

    90 °F

Climate (2021–2026)

Lebanon Municipal Airport (19.3 miles)

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  • Average Low 2021–2026

    37.9 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    59.7 °F
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