Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Fair

-2°F

-19°C

Humidity 79%
Wind Speed Calm
Barometer 30.25 in (1027.0 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Last update 20 Jan 12:53 am CST
Extended Forecast for

4 Miles NE Cottage Grove WI

  • Overnight

    Overnight: Clear, with a low around -6. Wind chill values between -15 and -20. West wind around 5 mph.

    Low: -6 °F

    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 14. Wind chill values between -5 and -15. West wind 5 to 10 mph.

    High: 14 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow, mainly after 9pm. The snow could be heavy at times.  Low around 11. South wind around 5 mph becoming north after midnight.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 11 °F

    Heavy Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly after noon.  Mostly cloudy, with a high near 23. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 23 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow before midnight.  Mostly cloudy, with a low around 5. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 5 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 15. West wind 10 to 15 mph.

    High: 15 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -14. Northwest wind around 10 mph.

    Low: -14 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -4. Northwest wind 5 to 10 mph.

    High: -4 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -16.

    Low: -16 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around -6. Wind chill values between -15 and -20. West wind around 5 mph.
Tuesday
Increasing clouds, with a high near 14. Wind chill values between -5 and -15. West wind 5 to 10 mph.
Tuesday Night
Snow, mainly after 9pm. The snow could be heavy at times. Low around 11. South wind around 5 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Wednesday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Wednesday Night
A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 5. West wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 15. West wind 10 to 15 mph.
Thursday Night
Partly cloudy, with a low around -14. Northwest wind around 10 mph.
Friday
Mostly sunny and cold, with a high near -4. Northwest wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around -16.
Saturday
Partly sunny and cold, with a high near 0.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around -9.
Sunday
A 20 percent chance of snow. Mostly sunny, with a high near 11.
Sunday Night
Partly cloudy, with a low around -5.
Monday
Mostly sunny, with a high near 13.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Cottage Grove WI
 43.13°N 89.16°W (Elev. 955 ft)
1:42 am CST Jan 20, 2026
1am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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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