Lake Massasecum Weather Forecast

    • 13
    • 20

    Increasing Clouds

    • 17
    • 29

    Partly Sunny

    • 19
    • 40

    Partly Sunny

    • 36
    • 44

    Rain Likely

    • 12
    • 47

    Partly Sunny

    • 24
    • 32

    Snow Showers

Today 15 Dec Merrimack

Partly sunny. Highs around 20. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 11 below in the morning.

Tonight 15 Dec Merrimack

Mostly clear. Lows around 7 above. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 10 below.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Massasecum Temperature Statistics

December Temperature

Concord Municipal Airport (20.5 miles)

  • Lowest 9 December, 2025

    -8 °F

  • Average December

    22.6 °F

  • Highest 1 December, 2025

    37 °F

Climate (2020–Present)

Concord Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    60.1 °F
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