Waterloo Weather Forecast

    • 72
    • 91

    Mostly Cloudy

    • 72
    • 91

    Slight Chance Thunderstorms

    • 71
    • 93

    Slight Chance Thunderstorms

    • 67
    • 90

    Chance Thunderstorms

    • 65
    • 80

    Chance Thunderstorms

    • 55
    • 78

    Chance Thunderstorms

Today 26 Apr Williamson

Mostly cloudy this Morning, then becoming partly cloudy. Highs in the lower 90s. South Winds 10 to 15 Mph.

Tonight 26 Apr Williamson

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 70s. South Winds 10 to 15 Mph.

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Waterloo Temperature Statistics

April Temperature

Georgetown, Georgetown Municipal Airport (17.4 miles)

  • Lowest 19 April, 2026

    45 °F

  • Average April

    69.5 °F

  • Highest 1 April, 2026

    89.1 °F

Climate (2021–Present)

Georgetown, Georgetown Municipal Airport (17.4 miles)

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  • Average Low 2021–2026

    59.4 °F

  • Average 2021–2026

    69.8 °F

  • Average High 2021–2026

    80.7 °F
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