Trimountain State Park Weather Forecast

    • 48
    • 59

    Rain Showers Likely

    • 48
    • 61

    Chance Rain Showers

    • 58
    • 74

    Partly Sunny

    • 58
    • 83

    Partly Sunny

    • 56
    • 77

    Mostly Sunny

    • 65
    • 85

    Mostly Sunny

    • 62
    • 88

    Chance Rain Showers

Today 14 May Northern Middlesex

Showers likely with a slight chance of Thunderstorms. Highs in the lower 60s. North Winds around 5 Mph. Chance of rain 70 percent.

Tonight 14 May Northern Middlesex

Cloudy. Showers likely with a chance of Thunderstorms this Evening, then a slight chance of Showers after midnight. Some Thunderstorms may produce small hail and heavy rainfall this evening. Lows in the upper 40s. Northwest Winds around 5 Mph. Chance of rain 70 percent.

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Trimountain State Park Temperature Statistics

May Temperature

Meriden, Meriden Markham Municipal Airport (6.2 miles)

  • Lowest 4 May, 2026

    35.1 °F

  • Average May

    54.3 °F

  • Highest 5 May, 2026

    75 °F

Climate (2021–Present)

Meriden, Meriden Markham Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.9 °F
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