Waterloo Weather Forecast

    • 56
    • 74

    Chance Rain Showers

    • 61
    • 80

    Mostly Sunny

    • 64
    • 83

    Chance Rain Showers

    • 66
    • 83

    Chance Rain Showers

    • 69
    • 85

    Chance Thunderstorms

    • 67
    • 85

    Chance Thunderstorms

Today 5 Aug Black Hawk

Mostly cloudy with Showers likely with a chance of Thunderstorms in the Morning, then partly sunny in the afternoon. Highs in the mid 70s. North Winds around 5 Mph. Chance of rain 70 percent.

Tonight 5 Aug Black Hawk

Showers with a chance of Thunderstorms. Near steady temperature in the lower 60s. North Winds 5 to 10 Mph. Chance of rain 90 percent.

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Waterloo Temperature Statistics

August Temperature

Waterloo, Waterloo Municipal Airport (5 miles)

  • Lowest 2 August, 2026

    62.1 °F

  • Average August

    72.4 °F

  • Highest 1 August, 2026

    82.7 °F

Climate (2021–2026)

Waterloo, Waterloo Municipal Airport (5 miles)

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  • Average Low 2021–2026

    40.2 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    61.9 °F
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