Sunapee State Park Weather Forecast

    • 58
    • 78

    Increasing Clouds

    • 63
    • 81

    Mostly Cloudy

    • 66
    • 83

    Chance Rain Showers

    • 65
    • 83

    Slight Chance Thunderstorms

    • 64
    • 81

    Chance Thunderstorms

    • 64
    • 83

    Mostly Sunny

Today 4 Aug Merrimack

Sunny. Highs in the lower 80s. West Winds around 10 Mph.

Tonight 4 Aug Merrimack

Mostly clear. Lows in the upper 50s. Light and variable Winds.

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Sunapee State Park Temperature Statistics

August Temperature

Springfield, Hartness State Springfield Airport (23 miles)

  • Lowest 1 August, 2026

    62.1 °F

  • Average August

    73 °F

  • Highest 1 August, 2026

    86 °F

Climate (2021–2026)

Springfield, Hartness State Springfield Airport (23 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    59.1 °F
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