Lake Sunapee Weather Forecast

    • 54
    • 66

    Chance Rain Showers

    • 54
    • 69

    Rain Showers Likely

    • 55
    • 68

    Rain

    • 56
    • 72

    Slight Chance Rain Showers

    • 56
    • 74

    Partly Sunny

    • 56
    • 72

    Chance Rain Showers

Today 20 Jun Sullivan

Partly sunny with a chance of Showers. A slight chance of Thunderstorms in the afternoon. Highs in the upper 60s. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

Tonight 20 Jun Sullivan

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms in the Evening, then mostly cloudy after midnight. Lows in the lower 50s. West Winds 10 to 15 Mph with Gusts up to 25 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Sunapee Temperature Statistics

June Temperature

Lebanon Municipal Airport (21.1 miles)

  • Lowest 2 June, 2026

    41 °F

  • Average June

    68.1 °F

  • Highest 12 June, 2026

    91.4 °F

Climate (2021–2026)

Lebanon Municipal Airport (21.1 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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