Lake Winnipesaukee Weather Forecast

    • 15
    • 36

    Breezy

    • 16
    • 25

    Chance Snow

    • 22
    • 31

    Snow

    • 16
    • 30

    Mostly Cloudy

    • 22
    • 32

    Chance Snow

    • 20
    • 35

    Slight Chance Snow

Today 21 Dec Belknap

Partly sunny. Highs in the upper 30s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 21 Dec Belknap

Cloudy. Near steady temperature around 30. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Winnipesaukee Temperature Statistics

December Temperature

Laconia, Laconia Municipal Airport (5 miles)

  • Lowest 9 December, 2025

    -2.9 °F

  • Average December

    22.9 °F

  • Highest 18 December, 2025

    44.1 °F

Climate (2020–Present)

Laconia, Laconia Municipal Airport (5 miles)

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  • Average Low 2020–2025

    39.3 °F

  • Average 2020–2025

    48.3 °F

  • Average High 2020–2025

    57.2 °F
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