Rock Island Weather Forecast

    • 17
    • 29

    Increasing Clouds

    • 22
    • 30

    Snow

    • 6
    • 25

    Snow

    • 9
    • 18

    Mostly Sunny

    • 17
    • 26

    Mostly Sunny

    • 21
    • 32

    Partly Sunny

Today 5 Feb Southern New London

Sunny. Highs around 30. Northwest Winds around 5 Mph.

Tonight 5 Feb Southern New London

Mostly clear in the Evening, then becoming partly cloudy. Lows around 12. North Winds around 5 Mph.

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Rock Island Temperature Statistics

February Temperature

Groton / New London, Groton / New London Airport (5.6 miles)

  • Lowest 3 February, 2026

    8.1 °F

  • Average February

    21 °F

  • Highest 2 February, 2026

    34 °F

Climate (2021–Present)

Groton / New London, Groton / New London Airport (5.6 miles)

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  • Average Low 2021–2026

    45.4 °F

  • Average 2021–2026

    53.3 °F

  • Average High 2021–2026

    60.9 °F
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