Allenstown Weather Forecast

    • 8
    • 25

    Mostly Sunny

    • 22
    • 35

    Wintry Mix

    • 19
    • 40

    Wintry Mix

    • 13
    • 25

    Mostly Cloudy

    • 16
    • 30

    Mostly Cloudy

    • 7
    • 25

    Chance Snow Showers

    • 7
    • 22

    Mostly Sunny

Today 27 Dec Merrimack

Mostly cloudy with a chance of snow in the Morning, then mostly sunny in the afternoon. Highs in the mid 20s. Light and variable Winds. Chance of snow 50 percent.

Tonight 27 Dec Merrimack

Mostly clear. Lows around 10 above. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allenstown Temperature Statistics

December Temperature

Concord Municipal Airport (5.6 miles)

  • Lowest 9 December, 2025

    -8 °F

  • Average December

    25 °F

  • Highest 19 December, 2025

    55.9 °F

Climate (2020–Present)

Concord Municipal Airport (5.6 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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