Dorchester Weather Forecast

    • 54
    • 82

    Increasing Clouds

    • 58
    • 82

    Mostly Cloudy

    • 54
    • 81

    Mostly Cloudy

    • 56
    • 80

    Partly Sunny

    • 55
    • 85

    Mostly Sunny

    • 54
    • 84

    Mostly Sunny

    • 57
    • 84

    Partly Sunny

Today 28 May Allamakee

Mostly sunny. Highs in the lower 80s. Light Winds.

Tonight 28 May Allamakee

Partly cloudy. Lows in the mid 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

May Temperature

Decorah (16.8 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    58.1 °F

  • Highest 26 May, 2026

    87.8 °F

Climate (2021–Present)

Decorah (16.8 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    56.8 °F
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