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.

Fair

9°F

-13°C

Humidity 72%
Wind Speed NW 9 mph
Barometer 30.55 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 23 Feb 9:15 am CST
Extended Forecast for

Ossian IA

  • Today

    Today: Increasing clouds, with a high near 18. Wind chill values as low as -5. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 18 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 8. Wind chill values as low as -4. Light south wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 23 mph.

    Low: 8 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow between 10am and 3pm. Partly sunny, with a high near 33. Breezy, with a south wind around 16 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    High: 33 °F

    Slight Chance
    Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 11. Wind chill values as low as -1. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 24 mph.

    Low: 11 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Sunny, with a high near 23. Northwest wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 23 °F

    Sunny then
    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 13. Light and variable wind becoming southeast around 6 mph in the evening. New snow accumulation of 1 to 3 inches possible.

    Low: 13 °F

    Chance Snow

  • Thursday

    Thursday: Partly sunny, with a high near 30. East wind 6 to 8 mph becoming west in the afternoon.

    High: 30 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. Southwest wind 7 to 10 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 43. Southwest wind 10 to 13 mph.

    High: 43 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 18. Wind chill values as low as -5. North wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 8. Wind chill values as low as -4. Light south wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 23 mph.
Tuesday
A slight chance of snow between 10am and 3pm. Partly sunny, with a high near 33. Breezy, with a south wind around 16 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 11. Wind chill values as low as -1. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 24 mph.
Wednesday
A 20 percent chance of snow after noon. Sunny, with a high near 23. Northwest wind 5 to 10 mph becoming light and variable in the afternoon.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 13. Light and variable wind becoming southeast around 6 mph in the evening. New snow accumulation of 1 to 3 inches possible.
Thursday
Partly sunny, with a high near 30. East wind 6 to 8 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 22. Southwest wind 7 to 10 mph.
Friday
Sunny, with a high near 43. Southwest wind 10 to 13 mph.
Friday Night
Partly cloudy, with a low around 20. West wind around 11 mph becoming north after midnight.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 32. North wind 11 to 13 mph.
Saturday Night
Partly cloudy, with a low around 11. North wind 9 to 11 mph.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 24. Northeast wind 8 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ossian IA
 43.15°N 91.77°W
Last Update:
8:06 am CST Feb 23, 2026
Forecast Valid:
9am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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