Rock Island Weather Forecast

    • 41
    • 43

    Increasing Clouds

    • 45
    • 50

    Rain Showers

    • 31
    • 50

    Slight Chance Rain Showers

    • 36
    • 43

    Partly Sunny

    • 30
    • 44

    Partly Sunny

    • 28
    • 39

    Partly Sunny

Today 4 Mar Southern New London

Mostly sunny. Highs in the mid 40s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 4 Mar Southern New London

Partly cloudy in the Evening, then becoming mostly cloudy. Not as cool with Lows in the upper 30s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Island Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2025

    25 °F

  • Average March

    40 °F

  • Highest 1 March, 2025

    48 °F

Climate (2020–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61 °F
Get WillyWeather+ to remove ads