Hanover Weather Forecast

    • 48
    • 64

    Rain Showers

    • 42
    • 59

    Partly Sunny

    • 41
    • 61

    Partly Sunny

    • 41
    • 63

    Mostly Sunny

    • 53
    • 69

    Chance Rain Showers

    • 58
    • 71

    Chance Thunderstorms

    • 56
    • 75

    Mostly Cloudy

Today 4 Sep Allamakee

Mostly sunny. Highs in the mid 60s. Southwest Winds 5 to 10 Mph.

Tonight 4 Sep Allamakee

Showers early this evening. Areas of smoke early this evening. Lows in the upper 40s. Southwest Winds 10 to 20 Mph, becoming west 15 to 20 Mph. Gusts up to 35 Mph. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

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Hanover Temperature Statistics

September Temperature

Decorah (11.8 miles)

  • Lowest 1 September, 2025

    50 °F

  • Average September

    62.9 °F

  • Highest 2 September, 2025

    75.2 °F

Climate (2020–Present)

Decorah (11.8 miles)

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  • Average Low 2020–2025

    39.2 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    56.4 °F
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