Coralville Lake Weather Forecast

    • 63
    • 78

    Rain Showers

    • 59
    • 66

    Rain Showers Likely

    • 54
    • 61

    Rain Showers Likely

    • 50
    • 60

    Mostly Cloudy

    • 54
    • 63

    Partly Sunny

    • 58
    • 66

    Slight Chance Rain Showers

    • 59
    • 69

    Mostly Cloudy

Today 19 Sep Johnson

Partly sunny. Highs around 70.

Tonight 19 Sep Johnson

Showers with Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of rain 90 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

    53.7 °F

  • Average September

    73.1 °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

    40.7 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    61.5 °F
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