Trimountain State Park Weather Forecast

    • 44
    • 63

    Rain Showers

    • 39
    • 57

    Mostly Sunny

    • 38
    • 57

    Mostly Sunny

    • 36
    • 55

    Partly Sunny

    • 36
    • 54

    Partly Sunny

    • 36
    • 54

    Mostly Cloudy

Today 22 Oct Northern Middlesex

Mostly cloudy with Showers with isolated Thunderstorms this Morning, then mostly sunny this afternoon. Highs in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

Tonight 22 Oct Northern Middlesex

Showers with isolated Thunderstorms. Lows in the lower 50s. South Winds around 5 Mph. Chance of rain 90 percent.

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Trimountain State Park Temperature Statistics

October Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest 10 October, 2025

    33.1 °F

  • Average October

    56.5 °F

  • Highest 5 October, 2025

    84 °F

Climate (2020–Present)

Meriden, Meriden Markham Municipal Airport (6.2 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    53.3 °F

  • Average High 2020–2025

    63.2 °F
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