Trimountain State Park Weather Forecast

    • 24
    • 41

    Increasing Clouds

    • 21
    • 38

    Decreasing Clouds

    • 11
    • 26

    Mostly Sunny

    • 27
    • 34

    Mostly Cloudy

    • 31
    • 43

    Chance Rain

    • 25
    • 40

    Chance Rain/Snow

    • 20
    • 37

    Chance Snow

Today 6 Dec Northern Middlesex

Partly sunny. Highs in the upper 30s. Southwest Winds around 5 Mph.

Tonight 6 Dec Northern Middlesex

Partly cloudy this Evening, then clearing. Lows in the mid 20s. West Winds around 5 Mph.

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  • Temperature Real-Time

Trimountain State Park Temperature Statistics

December Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest 4 December, 2025

    19 °F

  • Average December

    32.4 °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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