Black Rock Weather Forecast

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    • 59

    Rain Showers

    • 47
    • 62

    Rain Showers Likely

    • 44
    • 56

    Rain Showers Likely

    • 45
    • 59

    Partly Sunny

    • 48
    • 57

    Rain Showers Likely

    • 48
    • 60

    Rain Showers Likely

Today 9 May Southern New London

Scattered Showers this Morning, then Showers with a slight chance of Thunderstorms this afternoon. Highs in the lower 60s. East Winds 5 to 10 Mph, becoming south 10 to 15 Mph with Gusts up to 25 Mph this afternoon. Chance of rain near 100 percent.

Tonight 9 May Southern New London

Showers with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Patchy fog in the Evening, then Areas of fog after midnight. Lows in the upper 40s. South Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Black Rock Temperature Statistics

May Temperature

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

  • Lowest 4 May, 2026

    37 °F

  • Average May

    51.8 °F

  • Highest 7 May, 2026

    64 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    60.7 °F
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