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 tonight through early Sunday morning, resulting in hazardous road conditions. Portions of northeast Iowa into southwest Wisconsin could see snowfall amounts of 12+". 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

Oelwein Municipal Airport (KOLZ)

Lat: 42.68°NLon: 91.98°WElev: 1070ft.

Fair

30°F

-1°C

Humidity 51%
Wind Speed NW 10 mph
Barometer 30.36 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 28 Nov 1:35 pm CST
Extended Forecast for

Donnan IA

Winter Storm Warning November 29, 12:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • This Afternoon

    This Afternoon: Mostly sunny early, then becoming cloudy, with a high near 28. West wind around 5 mph.

    High: 28 °F

    Becoming
    Cloudy

  • Tonight

    Tonight: Snow, mainly after 10pm. Low around 21. Light east wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 21 °F

    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 27. Breezy, with an east wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 27 °F

    Heavy Snow
    and Breezy

  • Saturday Night

    Saturday Night: Snow, mainly before midnight. Low around 16. Blustery, with a northeast wind 13 to 20 mph becoming northwest after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 16 °F

    Blustery.
    Snow then
    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 20. Blustery, with a northwest wind 11 to 18 mph, with gusts as high as 32 mph.

    High: 20 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -1. Northwest wind 5 to 9 mph becoming light west after midnight.

    Low: -1 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 15. Southwest wind 3 to 7 mph.

    High: 15 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 4. Southwest wind around 7 mph.

    Low: 4 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 19. Southwest wind around 7 mph.

    High: 19 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny early, then becoming cloudy, with a high near 28. West wind around 5 mph.
Tonight
Snow, mainly after 10pm. Low around 21. Light east wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow. The snow could be heavy at times. High near 27. Breezy, with an east wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Saturday Night
Snow, mainly before midnight. Low around 16. Blustery, with a northeast wind 13 to 20 mph becoming northwest after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Sunday
Mostly sunny, with a high near 20. Blustery, with a northwest wind 11 to 18 mph, with gusts as high as 32 mph.
Sunday Night
Mostly cloudy, with a low around -1. Northwest wind 5 to 9 mph becoming light west after midnight.
Monday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 15. Southwest wind 3 to 7 mph.
Monday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 4. Southwest wind around 7 mph.
Tuesday
Partly sunny, with a high near 19. Southwest wind around 7 mph.
Tuesday Night
Mostly cloudy, with a low around 10. South wind 7 to 9 mph.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 27. Southwest wind 9 to 11 mph becoming northwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around -2. Northwest wind 7 to 10 mph.
Thursday
Mostly sunny, with a high near 16. Northwest wind 7 to 10 mph becoming southwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Donnan IA
 42.89°N 91.86°W
Last Update:
1:41 pm CST Nov 28, 2025
Forecast Valid:
2pm CST Nov 28, 2025-6pm CST Dec 4, 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