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.

Mostly Cloudy

N/A

Humidity NA
Wind Speed Calm
Barometer 29.92 in
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Aug 7:55 pm CDT
Extended Forecast for

Postville IA

  • Tonight

    Tonight: A 30 percent chance of showers after 5am. Increasing clouds, with a low around 69. East wind 3 to 6 mph.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Some of the storms could produce heavy rainfall. Cloudy, then gradually becoming mostly sunny, with a high near 80. Southeast wind 3 to 7 mph. Chance of precipitation is 50%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 80 °F

    Heavy Rain
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers after 5am. Partly cloudy, with a low around 66. Light and variable wind.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Light northeast wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. Calm wind becoming east around 5 mph after midnight.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 73. East wind 7 to 9 mph. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers after 5am. Increasing clouds, with a low around 69. East wind 3 to 6 mph.
Tuesday
A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Some of the storms could produce heavy rainfall. Cloudy, then gradually becoming mostly sunny, with a high near 80. Southeast wind 3 to 7 mph. Chance of precipitation is 50%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
A 10 percent chance of showers after 5am. Partly cloudy, with a low around 66. Light and variable wind.
Wednesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65. Calm wind.
Thursday
Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Light northeast wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. Calm wind becoming east around 5 mph after midnight.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 73. East wind 7 to 9 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Southeast wind around 8 mph becoming southwest in the afternoon. Chance of precipitation is 50%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming light and variable after midnight.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 74. Northwest wind 3 to 6 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59. Light northwest wind.
Monday
Mostly sunny, with a high near 74. Calm wind.
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ABOUT THIS FORECAST

 
Point Forecast:
Postville IA
 43.08°N 91.56°W
Last Update:
5:31 pm CDT Aug 10, 2026
Forecast Valid:
8pm CDT Aug 10, 2026-6pm CDT Aug 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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