Highland Lake Weather Forecast

    • 44
    • 63

    Mostly Cloudy

    • 41
    • 63

    Partly Sunny

    • 41
    • 62

    Partly Sunny

    • 44
    • 63

    Mostly Cloudy

    • 47
    • 63

    Chance Rain Showers

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    • 61

    Chance Rain Showers

Today 21 Sep Merrimack

Partly sunny. Highs in the mid 60s. Light and variable Winds.

Tonight 21 Sep Merrimack

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Highland Lake Temperature Statistics

September Temperature

Laconia, Laconia Municipal Airport (18.6 miles)

  • Lowest 15 September, 2026

    43 °F

  • Average September

    63.5 °F

  • Highest 10 September, 2026

    81 °F

Climate (2021–2026)

Laconia, Laconia Municipal Airport (18.6 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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