National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

A Few Clouds

79°F

26°C

Humidity 51%
Wind Speed Vrbl 5 G 13 mph
Barometer 30.05 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Aug 3:15 pm CDT
Extended Forecast for

Decorah IA

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 63. West wind around 5 mph becoming calm.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. West wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 57. Calm wind. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind.

    High: 78 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 79. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 79 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60. South wind 3 to 5 mph.

    Low: 60 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80. Light southwest wind becoming west 5 to 9 mph in the morning.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly clear, with a low around 60. West wind around 6 mph becoming calm in the evening.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 63. West wind around 5 mph becoming calm.
Tuesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. West wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 57. Calm wind. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind.
Wednesday Night
Partly cloudy, with a low around 57. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 79. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60. South wind 3 to 5 mph.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80. Light southwest wind becoming west 5 to 9 mph in the morning.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly clear, with a low around 60. West wind around 6 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers before 1pm. Sunny, with a high near 78. Light northwest wind becoming north 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 77. Light north wind.
Sunday Night
Partly cloudy, with a low around 56. Calm wind.
Monday
Mostly sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decorah IA
 43.3°N 91.79°W
Last Update:
1:26 pm CDT Aug 17, 2026
Forecast Valid:
3pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation