Black Rock Weather Forecast

    • 20
    • 43

    Slight Chance Rain/Snow

    • 31
    • 34

    Mostly Sunny

    • 32
    • 43

    Rain

    • 21
    • 37

    Partly Sunny

    • 35
    • 39

    Chance Rain/Snow

    • 31
    • 46

    Mostly Cloudy

Today 29 Jan Southern New London

Partly sunny with a 20 percent chance of Showers. Highs in the mid 40s. West Winds 15 to 20 Mph with Gusts up to 45 Mph.

Tonight 29 Jan Southern New London

Mostly clear. Lows around 19. Northwest Winds 15 to 20 Mph with Gusts up to 40 Mph.

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Black Rock Temperature Statistics

January Temperature

Groton / New London, Groton / New London Airport (1.2 miles)

  • Lowest 22 January, 2025

    5.8 °F

  • Average January

    29.1 °F

  • Highest 1 January, 2025

    51.7 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (1.2 miles)

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61 °F
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