Trimountain State Park Weather Forecast

    • 69
    • 88

    Rain Showers Likely

    • 65
    • 82

    Chance Rain Showers

    • 62
    • 86

    Mostly Sunny

    • 59
    • 82

    Mostly Sunny

    • 64
    • 83

    Partly Sunny

    • 70
    • 87

    Partly Sunny

    • 71
    • 89

    Slight Chance Thunderstorms

Today 1 Jul Northern Middlesex

Showers likely with a chance of Thunderstorms. Some Thunderstorms may produce gusty Winds and heavy rainfall. Near steady temperature in the upper 80s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent. Heat index Values up to 100.

Tonight 1 Jul Northern Middlesex

Showers with a slight chance of Thunderstorms early this Evening, then Showers likely after midnight. Lows around 70. West Winds around 5 Mph. Chance of rain near 100 percent.

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Trimountain State Park Temperature Statistics

July Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest

  • Average July

  • Highest

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

    53.1 °F
  • Average High 2020–2025

    63 °F
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