Connecticut River - Haddam Weather Forecast

    • 56
    • 70

    Mostly Cloudy

    • 59
    • 72

    Mostly Cloudy

    • 62
    • 74

    Chance Rain Showers

    • 68
    • 83

    Chance Rain Showers

    • 67
    • 92

    Chance Thunderstorms

    • 61
    • 84

    Partly Sunny

    • 64
    • 83

    Partly Sunny

Today 15 Jun Northern Middlesex

Mostly cloudy late this Morning, then becoming partly sunny. Highs in the upper 60s. East Winds around 5 Mph.

Tonight 15 Jun Northern Middlesex

Mostly cloudy. Lows in the mid 50s. East Winds around 5 Mph.

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Connecticut River - Haddam Temperature Statistics

June Temperature

Chester, Chester Airport (6.2 miles)

  • Lowest 1 June, 2025

    48.2 °F

  • Average June

    68.1 °F

  • Highest 5 June, 2025

    89.6 °F

Climate (2020–Present)

Chester, Chester Airport (6.2 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    62.6 °F
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