Coralville Lake Weather Forecast

    • 66
    • 70

    Rain Showers

    • 66
    • 75

    Rain Showers Likely

    • 70
    • 77

    Rain Showers

    • 65
    • 81

    Rain Showers Likely

    • 61
    • 69

    Chance Rain Showers

    • 58
    • 67

    Mostly Cloudy

    • 57
    • 67

    Partly Sunny

Today 16 Sep Johnson

Cloudy with a 30 percent chance of Showers. Near steady temperature in the upper 60s. East Winds around 5 Mph.

Tonight 16 Sep Johnson

A slight chance of Showers and Thunderstorms in the Evening, then Showers with Thunderstorms likely after midnight. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible after midnight. Humid with Lows in the mid 60s. East Winds around 5 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Coralville Lake Temperature Statistics

September Temperature

Cedar Rapids Airport (9.9 miles)

  • Lowest 13 September, 2026

    53.1 °F

  • Average September

    74.3 °F

  • Highest 3 September, 2026

    94.6 °F

Climate (2021–2026)

Cedar Rapids Airport (9.9 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    61.5 °F
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