Trimountain State Park Weather Forecast

    • 67
    • 79

    Chance Thunderstorms

    • 62
    • 81

    Chance Rain Showers

    • 62
    • 78

    Mostly Sunny

    • 66
    • 79

    Partly Sunny

    • 64
    • 79

    Chance Rain Showers

    • 64
    • 77

    Chance Rain Showers

Today 27 Aug Northern Middlesex

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Highs around 80. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 27 Aug Northern Middlesex

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 40 percent.

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Trimountain State Park Temperature Statistics

August Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest 25 August, 2026

    55.9 °F

  • Average August

    73.1 °F

  • Highest 7 August, 2026

    91 °F

Climate (2021–2026)

Meriden, Meriden Markham Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    42.9 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    63 °F
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