Highland Lake Weather Forecast

    • 55
    • 75

    Increasing Clouds

    • 52
    • 75

    Partly Sunny

    • 62
    • 73

    Rain Showers

    • 54
    • 78

    Slight Chance Rain Showers

    • 49
    • 71

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

Today 7 Sep Merrimack

Mostly sunny. Highs in the mid 70s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 7 Sep Merrimack

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northwest Winds around 10 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Highland Lake Temperature Statistics

September Temperature

Laconia, Laconia Municipal Airport (18.6 miles)

  • Lowest 1 September, 2026

    55 °F

  • Average September

    65.6 °F

  • Highest 4 September, 2026

    79 °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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