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

30°F

-1°C

Humidity 100%
Wind Speed NW 5 mph
Barometer 30.12 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 9 Jan 7:55 pm CST
Extended Forecast for

Ossian IA

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 3am. Mostly cloudy, with a steady temperature around 29. Calm wind becoming northwest 5 to 7 mph after midnight. Total nighttime snow accumulation of less than a half inch possible.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A slight chance of snow before 11am, then a chance of flurries between 11am and 3pm, then a slight chance of snow after 3pm. Partly sunny, with a high near 29. Blustery, with a northwest wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 29 °F

    Slight Chance
    Snow and
    Blustery

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 15. Blustery, with a northwest wind 15 to 18 mph, with gusts as high as 26 mph.

    Low: 15 °F

    Mostly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 26. Northwest wind 8 to 14 mph becoming southwest in the afternoon.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 40. West wind 8 to 10 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Partly sunny, with a high near 43. West wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 43 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 24. Northwest wind around 14 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly after 3am. Mostly cloudy, with a steady temperature around 29. Calm wind becoming northwest 5 to 7 mph after midnight. Total nighttime snow accumulation of less than a half inch possible.
Saturday
A slight chance of snow before 11am, then a chance of flurries between 11am and 3pm, then a slight chance of snow after 3pm. Partly sunny, with a high near 29. Blustery, with a northwest wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 15. Blustery, with a northwest wind 15 to 18 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 26. Northwest wind 8 to 14 mph becoming southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 22. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 40. West wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 32. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 43. West wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 24. Northwest wind around 14 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 28. North wind 11 to 14 mph.
Wednesday Night
Mostly cloudy, with a low around 15. North wind 7 to 10 mph.
Thursday
A 20 percent chance of snow. Mostly sunny, with a high near 28. West wind 7 to 10 mph becoming south in the afternoon.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 22. South wind around 10 mph.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 29. West wind 10 to 13 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 91.74°W
Last Update:
6:41 pm CST Jan 9, 2026
Forecast Valid:
8pm CST Jan 9, 2026-6pm CST Jan 16, 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