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

Watertown (KRYV)

Lat: 43.17°NLon: 88.72°WElev: 814ft.

Fair

-5°F

-21°C

Humidity 76%
Wind Speed Calm
Barometer 30.25 in
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Last update 20 Jan 12:35 am CST
Extended Forecast for

2 Miles WSW Ashippun WI

  • Overnight

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

    Low: -6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 13. Wind chill values between -5 and -15. West wind 5 to 10 mph.

    High: 13 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow, mainly after 8pm.  Temperature rising to around 17 by 3am. South wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 11 °F

    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly before noon.  Mostly cloudy, with a high near 22. Light west wind increasing to 10 to 15 mph in the morning.

    High: 22 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow before midnight.  Mostly cloudy, with a low around 5. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 5 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 13. West wind 10 to 15 mph.

    High: 13 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -13. Northwest wind around 10 mph.

    Low: -13 °F

    Partly Cloudy

  • Friday

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

    High: -5 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -18.

    Low: -18 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly 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 13. Wind chill values between -5 and -15. West wind 5 to 10 mph.
Tuesday Night
Snow, mainly after 8pm. Temperature rising to around 17 by 3am. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 22. Light west wind increasing to 10 to 15 mph in the morning.
Wednesday Night
A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 5. West wind around 15 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 13. West wind 10 to 15 mph.
Thursday Night
Partly cloudy, with a low around -13. Northwest wind around 10 mph.
Friday
Mostly sunny and cold, with a high near -5. Northwest wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around -18.
Saturday
Mostly sunny and cold, with a high near -2.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -14.
Sunday
A 20 percent chance of snow. Mostly sunny and cold, with a high near 7.
Sunday Night
Mostly cloudy, with a low around -4.
Monday
Mostly sunny, with a high near 14.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Ashippun WI
 43.22°N 88.53°W (Elev. 853 ft)
12:21 am CST Jan 20, 2026
12am 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