Coralville Lake Weather Forecast

    • 73
    • 94

    Mostly Sunny

    • 69
    • 91

    Mostly Sunny

    • 68
    • 85

    Chance Rain Showers

    • 68
    • 85

    Partly Sunny

    • 73
    • 92

    Rain Showers Likely

    • 67
    • 89

    Chance Rain Showers

    • 64
    • 83

    Partly Sunny

Today 4 Sep Johnson

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 105.

Tonight 4 Sep Johnson

Partly cloudy in the Evening, then becoming mostly clear. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph. Heat index Values up to 102 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Coralville Lake Temperature Statistics

September Temperature

Cedar Rapids Airport (9.9 miles)

  • Lowest 1 September, 2026

    70.6 °F

  • Average September

    81.6 °F

  • Highest 1 September, 2026

    93.7 °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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