National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Winter Storm and Cold for the Weekend

A prolonged period of moderate to heavy snow affects the region through Sunday morning, resulting in hazardous road conditions. Portions of NE Iowa into SW Wisconsin could see snowfall amounts of 12+". The risk for blowing snow increases tonight into Sunday morning. Colder air arrives for Sunday through Tuesday with overnight wind chills in the single digits to teens below zero. Read More >

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Light Snow

27°F

-3°C

Humidity 100%
Wind Speed E 12 mph
Barometer 29.92 in
Dewpoint 27°F (-3°C)
Visibility 1.00 mi
Wind Chill16°F (-9°C)
Last update 29 Nov 2:35 pm CST
Extended Forecast for

Calmar IA

Winter Storm Warning November 29, 02:46pm until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning November 29, 02:46pm until November 30, 06:00am

    NOW until 6:00am Sun

    Winter Storm Warning

  • This Afternoon

    High: 26 °F

    Snow

  • Tonight

    Tonight: Snow, mainly before 3am. Patchy blowing snow after 1am. Low around 18. Blustery, with a northeast wind 11 to 21 mph becoming northwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 18 °F

    Snow and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 20 by 10am, then falling to around 14 during the remainder of the day. Blustery, with a northwest wind 9 to 18 mph, with gusts as high as 30 mph.

    High: 20 °F⇓

    Decreasing
    Clouds and
    Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 1. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 1 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 17. South wind 3 to 7 mph.

    High: 17 °F

    Mostly Cloudy
    then Chance
    Snow

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 9. South wind around 7 mph.

    Low: 9 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 20. Southwest wind around 7 mph.

    High: 20 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 13. South wind 7 to 9 mph.

    Low: 13 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Snow. High near 26. East wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 7 inches possible.
Tonight
Snow, mainly before 3am. Patchy blowing snow after 1am. Low around 18. Blustery, with a northeast wind 11 to 21 mph becoming northwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Sunday
Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 20 by 10am, then falling to around 14 during the remainder of the day. Blustery, with a northwest wind 9 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 1. Northwest wind 5 to 7 mph becoming calm after midnight.
Monday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 17. South wind 3 to 7 mph.
Monday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 9. South wind around 7 mph.
Tuesday
Partly sunny, with a high near 20. Southwest wind around 7 mph.
Tuesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 13. South wind 7 to 9 mph.
Wednesday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 25. Southwest wind 9 to 13 mph becoming northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around -6. Northwest wind 6 to 10 mph.
Thursday
Sunny, with a high near 14. West wind 6 to 10 mph becoming southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 3. Southwest wind around 10 mph.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 24. West wind around 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Calmar IA
 43.17°N 91.89°W
Last Update:
2:36 pm CST Nov 29, 2025
Forecast Valid:
2pm CST Nov 29, 2025-6pm CST Dec 5, 2025
 
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