Connecticut River - Back River North Entrance Weather Forecast

    • 52
    • 80

    Becoming Sunny

    • 51
    • 72

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 59
    • 72

    Partly Sunny

    • 60
    • 78

    Chance Rain Showers

    • 54
    • 76

    Slight Chance Rain Showers

Today 19 Sep Southern New London

Sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph.

Tonight 19 Sep Southern New London

Mostly clear. Less humid with Lows in the lower 50s. North Winds 5 to 10 Mph.

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Connecticut River - Back River North Entrance Temperature Statistics

September Temperature

Chester, Chester Airport (9.9 miles)

  • Lowest 8 September, 2025

    50 °F

  • Average September

    65.1 °F

  • Highest 5 September, 2025

    82.4 °F

Climate (2020–Present)

Chester, Chester Airport (9.9 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    62.7 °F
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