Alton Bay Weather Forecast

    • 25
    • 44

    Becoming Sunny

    • 20
    • 39

    Chance Snow

    • 24
    • 46

    Sunny

    • 32
    • 54

    Mostly Cloudy

    • 44
    • 63

    Slight Chance Rain Showers

    • 35
    • 62

    Mostly Sunny

Today 6 Apr Belknap

Partly sunny. Isolated snow Showers this morning. Highs in the lower 40s. West Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of snow 20 percent.

Tonight 6 Apr Belknap

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 20s. West Winds 10 to 15 Mph with Gusts up to 30 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alton Bay Temperature Statistics

April Temperature

Laconia, Laconia Municipal Airport (11.2 miles)

  • Lowest 2 April, 2026

    32 °F

  • Average April

    41.7 °F

  • Highest 1 April, 2026

    55.9 °F

Climate (2021–Present)

Laconia, Laconia Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57 °F
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