Connecticut River - Lieutenant River Entrance Weather Forecast

    • 60
    • 75

    Partly Sunny

    • 65
    • 79

    Chance Rain Showers

    • 53
    • 79

    Partly Sunny

    • 55
    • 69

    Chance Rain Showers

    • 57
    • 72

    Chance Rain Showers

    • 56
    • 71

    Chance Rain Showers

Today 16 Sep Southern New London

Mostly sunny. Highs in the lower 70s. Southwest Winds 5 to 10 Mph.

Tonight 16 Sep Southern New London

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows around 60. Southwest Winds around 5 Mph.

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Connecticut River - Lieutenant River Entrance Temperature Statistics

September Temperature

Chester, Chester Airport (9.3 miles)

  • Lowest 7 September, 2026

    53.6 °F

  • Average September

    69.4 °F

  • Highest 10 September, 2026

    86 °F

Climate (2021–2026)

Chester, Chester Airport (9.3 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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