Williamstown Weather Forecast

    • 53
    • 64

    Rain Showers

    • 47
    • 65

    Chance Rain Showers

    • 41
    • 64

    Chance Rain Showers

    • 44
    • 65

    Mostly Sunny

    • 48
    • 72

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 54
    • 77

    Partly Sunny

Today 30 Apr Johnson

Cloudy with scattered Showers. Highs in the lower 60s. Temperature falling into the upper 50s. Southeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 30 Apr Johnson

A chance of Showers early this Evening, then Showers with a slight chance of Thunderstorms. Not as cool. Near steady temperature in the lower 50s. East Winds 5 to 10 Mph. Chance of rain near 100 percent.

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Williamstown Temperature Statistics

April Temperature

Iowa City Municipal Airport (10.6 miles)

  • Lowest 8 April, 2025

    26.9 °F

  • Average April

    53.5 °F

  • Highest 28 April, 2025

    82 °F

Climate (2020–Present)

Iowa City Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    62.4 °F
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