Old Lyme Weather Forecast

    • 61
    • 81

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

    • 64
    • 83

    Partly Sunny

    • 63
    • 82

    Mostly Cloudy

    • 62
    • 79

    Partly Sunny

    • 62
    • 80

    Mostly Sunny

    • 66
    • 83

    Partly Sunny

Today 3 Aug Southern New London

Sunny. Near steady temperature in the upper 70s. South Winds around 5 Mph.

Tonight 3 Aug Southern New London

Mostly clear. Lows in the lower 60s. South Winds around 5 Mph in the Evening, becoming light and variable.

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Old Lyme Temperature Statistics

August Temperature

Chester, Chester Airport (11.2 miles)

  • Lowest 1 August, 2025

    59 °F

  • Average August

    65.1 °F

  • Highest 1 August, 2025

    77 °F

Climate (2020–Present)

Chester, Chester Airport (11.2 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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