Merrimac Weather Forecast

    • 24
    • 36

    Chance Snow

    • 13
    • 30

    Chance Snow

    • 17
    • 25

    Partly Sunny

    • 19
    • 32

    Partly Sunny

    • 26
    • 40

    Mostly Cloudy

    • 31
    • 46

    Chance Rain

Today 13 Dec Western Essex

Partly sunny in the Morning, then becoming mostly cloudy. Highs in the mid 30s. Southwest Winds 5 to 10 Mph.

Tonight 13 Dec Western Essex

Mostly clear. Near steady temperature in the lower 20s. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

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Merrimac Temperature Statistics

December Temperature

Lawrence Municipal Airport (9.9 miles)

  • Lowest 5 December, 2025

    8.1 °F

  • Average December

    27.7 °F

  • Highest 10 December, 2025

    46 °F

Climate (2020–Present)

Lawrence Municipal Airport (9.9 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    61.1 °F
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