Lake Massasecum Weather Forecast

    • 41
    • 66

    Chance Rain Showers

    • 43
    • 51

    Rain

    • 51
    • 73

    Chance Rain Showers

    • 55
    • 83

    Partly Sunny

    • 50
    • 79

    Slight Chance Rain Showers

    • 46
    • 70

    Slight Chance Rain Showers

Today 23 May Merrimack

Mostly cloudy. Highs in the mid 60s. Light and variable Winds, becoming southeast around 10 Mph this afternoon.

Tonight 23 May Merrimack

Cloudy. A slight chance of Showers after midnight. Lows in the lower 40s. Southeast Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Massasecum Temperature Statistics

May Temperature

Concord Municipal Airport (20.5 miles)

  • Lowest 4 May, 2026

    30.7 °F

  • Average May

    56.1 °F

  • Highest 19 May, 2026

    95 °F

Climate (2021–Present)

Concord Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    60 °F
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