Trimountain State Park Weather Forecast

    • 24
    • 27

    Mostly Cloudy

    • 28
    • 43

    Rain

    • 19
    • 34

    Partly Sunny

    • 23
    • 34

    Partly Sunny

    • 26
    • 38

    Chance Snow

    • 14
    • 33

    Slight Chance Snow

    • 16
    • 27

    Partly Sunny

Today 9 Dec Northern Middlesex

Partly sunny. Highs around 30. South Winds 5 to 10 Mph.

Tonight 9 Dec Northern Middlesex

Mostly cloudy. Not as cool with Lows in the mid 20s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Trimountain State Park Temperature Statistics

December Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest 5 December, 2025

    12.9 °F

  • Average December

    30.4 °F

  • Highest 1 December, 2025

    41 °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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