Williamstown Weather Forecast

    • 31
    • 51

    Mostly Sunny

    • 46
    • 51

    Rain Showers

    • 38
    • 71

    Rain Showers Likely

    • 35
    • 56

    Mostly Cloudy

    • 37
    • 57

    Chance Rain Showers

    • 35
    • 56

    Chance Rain Showers

Today 31 Mar Johnson

Sunny. Highs in the lower 50s. North Winds 10 to 15 Mph.

Tonight 31 Mar Johnson

Mostly clear. Lows in the lower 30s. North Winds 5 to 10 Mph, becoming east with Gusts up to 20 Mph after midnight.

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Williamstown Temperature Statistics

March Temperature

Iowa City Municipal Airport (10.6 miles)

  • Lowest 2 March, 2025

    13.7 °F

  • Average March

    45.9 °F

  • Highest 14 March, 2025

    83.6 °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

    52.2 °F

  • Average High 2020–2025

    62.3 °F
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