Williamstown Weather Forecast

    • 62
    • 79

    Slight Chance Rain Showers

    • 64
    • 73

    Rain Showers Likely

    • 70
    • 88

    Partly Sunny

    • 75
    • 93

    Mostly Sunny

    • 73
    • 95

    Mostly Sunny

    • 71
    • 93

    Partly Sunny

Today 23 Jul Lewis

Mostly sunny. Highs around 80. East Winds around 5 Mph.

Tonight 23 Jul Lewis

Mostly cloudy. Isolated Showers after midnight. Lows in the lower 60s. East Winds around 5 Mph. Chance of rain 20 percent.

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Williamstown Temperature Statistics

July Temperature

Keokuk Municipal Airport (24.2 miles)

  • Lowest 8 July, 2026

    62.6 °F

  • Average July

    78.9 °F

  • Highest 18 July, 2026

    93.2 °F

Climate (2021–2026)

Keokuk Municipal Airport (24.2 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    53.9 °F

  • Average High 2021–2026

    63.6 °F
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