Niantic Weather Forecast

    • 53
    • 69

    Increasing Clouds

    • 46
    • 62

    Rain Showers

    • 46
    • 59

    Slight Chance Rain Showers

    • 48
    • 70

    Mostly Sunny

    • 55
    • 70

    Mostly Cloudy

    • 49
    • 74

    Chance Rain Showers

Today 25 Apr Southern New London

Mostly sunny. Highs around 70. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 25 Apr Southern New London

Mostly cloudy. Showers after midnight. Lows in the lower 50s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 80 percent.

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Niantic Temperature Statistics

April Temperature

Groton / New London, Groton / New London Airport (6.8 miles)

  • Lowest 10 April, 2025

    27.8 °F

  • Average April

    47.5 °F

  • Highest 4 April, 2025

    70.6 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (6.8 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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