Connecticut River - Haddam Island State Park Weather Forecast

    • 40
    • 53

    Increasing Clouds

    • 47
    • 62

    Rain

    • 26
    • 50

    Chance Rain

    • 27
    • 42

    Mostly Sunny

    • 33
    • 48

    Partly Sunny

    • 42
    • 55

    Partly Sunny

Today 25 Mar Northern Middlesex

Partly sunny. Highs in the lower 50s. Southwest Winds 5 to 10 Mph.

Tonight 25 Mar Northern Middlesex

Mostly cloudy. Lows in the upper 30s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Connecticut River - Haddam Island State Park Temperature Statistics

March Temperature

Chester, Chester Airport (7.5 miles)

  • Lowest 2 March, 2026

    15.8 °F

  • Average March

    41.6 °F

  • Highest 10 March, 2026

    73.4 °F

Climate (2021–Present)

Chester, Chester Airport (7.5 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    62.6 °F
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