Decorah Municipal Airport Weather Forecast

    • 8
    • 33

    Becoming Sunny

    • 20
    • 26

    Partly Sunny

    • 31
    • 38

    Mostly Cloudy

    • 28
    • 39

    Mostly Cloudy

    • 36
    • 41

    Cloudy

    • 31
    • 47

    Mostly Cloudy

Today 20 Dec Winneshiek

Mostly sunny. Not as cool with Highs in the lower 30s. Temperature falling into the upper 20s in the afternoon. West Winds 10 to 15 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 20 Dec Winneshiek

Clear. Lows around 5 above. Northwest Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Decorah Municipal Airport Temperature Statistics

December Temperature

Decorah (0 miles)

  • Lowest 14 December, 2025

    -9.4 °F

  • Average December

    17.1 °F

  • Highest 16 December, 2025

    39.2 °F

Climate (2020–Present)

Decorah (0 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    39.4 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    56.6 °F
Get WillyWeather+ to remove ads