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Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Light Snow

14°F

-10°C

Humidity 92%
Wind Speed NW 9 G 21 mph
Barometer 29.98 in
Dewpoint 12°F (-11°C)
Visibility 2.50 mi
Wind Chill2°F (-17°C)
Last update 17 Jan 2:15 pm CST
Extended Forecast for

Ossian IA

Cold Weather Advisory January 18, 11:00pm until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: A 20 percent chance of snow before 3pm. Cloudy, with a high near 13. Wind chill values as low as -8. Blustery, with a northwest wind 15 to 17 mph, with gusts as high as 26 mph.

    High: 13 °F

    Slight Chance
    Snow and
    Blustery

  • Tonight

    Tonight: Mostly cloudy, with a low around 0. Wind chill values as low as -14. Northwest wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

    Low: 0 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow, mainly after noon. High near 17. Wind chill values as low as -10. Blustery, with a southwest wind 9 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 17 °F

    Chance Snow
    then Snow and
    Blustery

  • Sunday Night

    Sunday Night: Patchy blowing snow between 7pm and 5am. Cloudy, then gradually becoming partly cloudy, with a low around -7. Wind chill values as low as -29. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 39 mph.

    Low: -7 °F

    Patchy
    Blowing Snow
    and Blustery

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 2. Blustery, with a northwest wind 10 to 18 mph, with gusts as high as 32 mph.

    High: 2 °F

    Cold and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around -5. Southwest wind 6 to 8 mph.

    Low: -5 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 17. Southwest wind 6 to 8 mph.

    High: 17 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 11. South wind 7 to 10 mph becoming west after midnight.

    Low: 11 °F

    Chance Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 19. West wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 19 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of snow before 3pm. Cloudy, with a high near 13. Wind chill values as low as -8. Blustery, with a northwest wind 15 to 17 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 0. Wind chill values as low as -14. Northwest wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 24 mph.
Sunday
Snow, mainly after noon. High near 17. Wind chill values as low as -10. Blustery, with a southwest wind 9 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
Patchy blowing snow between 7pm and 5am. Cloudy, then gradually becoming partly cloudy, with a low around -7. Wind chill values as low as -29. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 39 mph.
M.L.King Day
Mostly sunny and cold, with a high near 2. Blustery, with a northwest wind 10 to 18 mph, with gusts as high as 32 mph.
Monday Night
Partly cloudy, with a low around -5. Southwest wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 17. Southwest wind 6 to 8 mph.
Tuesday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 11. South wind 7 to 10 mph becoming west after midnight.
Wednesday
Partly sunny, with a high near 19. West wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 2. West wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 17. West wind around 9 mph.
Thursday Night
Mostly cloudy, with a low around 5. Southwest wind around 8 mph.
Friday
Partly sunny, with a high near 15. North wind 8 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ossian IA
 43.15°N 91.77°W
Last Update:
1:52 pm CST Jan 17, 2026
Forecast Valid:
2pm CST Jan 17, 2026-6pm CST Jan 23, 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