Trimountain State Park Weather Forecast

    • 22
    • 30

    Snow

    • 13
    • 29

    Mostly Sunny

    • 17
    • 27

    Partly Sunny

    • 14
    • 28

    Mostly Cloudy

    • 14
    • 29

    Partly Sunny

    • 22
    • 32

    Chance Snow

Today 31 Dec Northern Middlesex

Partly sunny. Highs in the lower 30s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 31 Dec Northern Middlesex

Mostly cloudy. A chance of light snow in the Evening, then light snow after midnight. Total snow accumulation of 1 to 3 Inches. Lows in the lower 20s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph after midnight. Chance of snow 90 percent.

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Trimountain State Park Temperature Statistics

December Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest 9 December, 2025

    8.1 °F

  • Average December

    30.2 °F

  • Highest 19 December, 2025

    57.9 °F

Climate (2020–Present)

Meriden, Meriden Markham Municipal Airport (6.2 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    63.1 °F
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