Coralville Lake Weather Forecast

    • 64
    • 89

    Thunderstorms

    • 65
    • 87

    Chance Thunderstorms

    • 63
    • 80

    Chance Rain Showers

    • 64
    • 83

    Chance Rain Showers

    • 64
    • 83

    Chance Rain Showers

    • 61
    • 82

    Chance Thunderstorms

    • 58
    • 79

    Mostly Sunny

Today 17 Sep Johnson

Mostly sunny with scattered Showers and Thunderstorms. Highs in the upper 80s. Southeast Winds around 5 Mph. Chance of rain 40 percent.

Tonight 17 Sep Johnson

Partly cloudy this Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. Lows in the mid 60s. East Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Coralville Lake Temperature Statistics

September Temperature

Cedar Rapids Airport (9.9 miles)

  • Lowest 7 September, 2025

    39.9 °F

  • Average September

    65.1 °F

  • Highest 13 September, 2025

    93 °F

Climate (2020–Present)

Cedar Rapids Airport (9.9 miles)

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  • Average Low 2020–2025

    40.1 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    60.8 °F
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