Alton Weather Forecast

    • 57
    • 79

    Partly Sunny

    • 58
    • 78

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

    • 64
    • 82

    Chance Rain Showers

    • 60
    • 81

    Chance Thunderstorms

    • 57
    • 79

    Partly Sunny

    • 61
    • 80

    Partly Sunny

Today 24 Aug Belknap

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 70s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 24 Aug Belknap

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Patchy fog after midnight. Lows in the mid 50s. Southwest Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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Alton Temperature Statistics

August Temperature

Laconia, Laconia Municipal Airport (9.9 miles)

  • Lowest 16 August, 2026

    51.1 °F

  • Average August

    71.9 °F

  • Highest 7 August, 2026

    91 °F

Climate (2021–2026)

Laconia, Laconia Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57 °F
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