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

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Overcast

75°F

24°C

Humidity 94%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 1 Sep 11:15 pm CDT
Extended Forecast for

Decorah IA

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 69. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Mostly Clear
    then Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly between 11am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 87. Light southeast wind.

    High: 87 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms likely, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 69. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 50 percent chance of showers and thunderstorms, mainly between 11am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 87. Light southeast wind.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Calm wind.
Sunday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light southeast wind.
Labor Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind 3 to 7 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southeast wind around 7 mph.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind 7 to 11 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Decorah IA
 43.3°N 91.82°W
Last Update:
11:06 pm CDT Sep 1, 2026
Forecast Valid:
11pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation