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.

Fair

79°F

26°C

Humidity 30%
Wind Speed Vrbl 5 mph
Barometer 29.80 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 16 May 6:15 pm CDT
Extended Forecast for

Decorah IA

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 57. Calm wind becoming east around 5 mph after midnight.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 1pm. High near 82. East wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 65. Breezy, with a south wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 82. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 59. South wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 59 °F

    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69. Breezy, with a west wind around 16 mph, with gusts as high as 28 mph.

    High: 69 °F

    Slight Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Northwest wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61. North wind 7 to 9 mph.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. North wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 57. Calm wind becoming east around 5 mph after midnight.
Sunday
Showers and thunderstorms, mainly before 1pm. High near 82. East wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 65. Breezy, with a south wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 82. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 59. South wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69. Breezy, with a west wind around 16 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 61. North wind 7 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 41. North wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 65. Calm wind becoming east 5 to 7 mph in the morning.
Thursday Night
Partly cloudy, with a low around 44. Southeast wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 70. Southeast wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 49. East wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 76. Southeast wind 5 to 9 mph.
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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:
5:31 pm CDT May 16, 2026
Forecast Valid:
6pm CDT May 16, 2026-6pm CDT May 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation