Coralville Lake Weather Forecast

    • 50
    • 63

    Gradual Clearing

    • 55
    • 67

    Increasing Clouds

    • 58
    • 67

    Mostly Cloudy

    • 56
    • 68

    Chance Rain Showers

    • 58
    • 63

    Chance Rain Showers

    • 58
    • 70

    Mostly Cloudy

    • 61
    • 73

    Chance Rain Showers

Today 22 Sep Johnson

Mostly cloudy with a 40 percent chance of Showers. Lows in the upper 50s. Highs in the lower 70s.

Tonight 22 Sep Johnson

Mostly cloudy this Evening, then clearing. Lows around 50. Northeast Winds 5 to 10 Mph.

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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

    72.5 °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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