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Sullivan, Wisconsin Weather Forecast
Sullivan, Wisconsin Weather
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Weather Forecast for Sullivan, Wisconsin : Jefferson County
Issued: 12:11 am CST Dec 7, 2025 Latitude: 43.0127852 Longitude: -88.5881562 View on Google Maps

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Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
100% chance of snow on Overnight 20% chance of snow on Sunday Mostly Cloudy on Monday 30% chance of rain & snow on Tuesday 40% chance of snow on Wednesday 30% chance of snow on Thursday 20% chance of snow on Friday Partly Sunny on Saturday
Low: 15°F High: 19°F High: 22°F High: 36°F High: 33°F High: 24°F High: 15°F High: 11°F
Low: 1 °F Low: 15°F Low: 28°F Low: 9°F Low: 5°F Low: -2°F  
Snow Snow Mostly Cloudy Rain & Snow Snow Snow Snow Partly Sunny
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Current Conditions at
WATERTOWN - (KRYV)
23°
Cloudy
Light Snow
as of 12:15 AM CST
Rel. Humidity: 85%
Dew Point: 19°F
Visibility: 1 1/4 Miles
Pressure: 30.02 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1300ft
Current Conditions at
WAUKESHA - (KUES)
23°
Cloudy
Unknown Precip
as of 12:15 AM CST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 2 1/2 Miles
Pressure: 30.01 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Broken at 1900ft, Solid Overcast at 2600ft
Current Conditions at
BURLINGTON MUNICIPAL AIR - (KBUU)
23°
Cloudy
as of 12:10 AM CST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 1 Miles
Pressure: 29.99 in.
Flight Rule: IFR
Wind Data
3 MPH
010° North
Cloud Level(s): Solid Overcast at 1000ft
Current Conditions at
JUNEAU - (KUNU)
19°
Cloudy
Light Snow
as of 12:15 AM CST
Rel. Humidity: 92%
Dew Point: 18°F
Visibility: 3 Miles
Pressure: 30.03 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 2600ft, Solid Overcast at 3600ft
100% chance of snow Overnight Overnight... Snow. The snow could be heavy at times. Low around 15. Calm wind becoming north around 5 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
20% chance of snow Sunday Sunday... A 20 percent chance of snow before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 19. North wind 5 to 10 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 1. Wind chill values between -5 and zero. North wind around 5 mph becoming calm in the evening.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 22. Light and variable wind becoming south 5 to 10 mph in the morning.
50% chance of snow Monday Night Monday Night... A 50 percent chance of snow. Mostly cloudy, with a low around 15. South wind 10 to 15 mph.
30% chance of rain & snow Tuesday Tuesday... A slight chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 36. West wind 10 to 15 mph. Chance of precipitation is 30%.
90% chance of rain & snow Tuesday Night Tuesday Night... Rain and snow. Low around 28. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
40% chance of snow Wednesday Wednesday... A 40 percent chance of snow showers. Mostly cloudy, with a high near 33. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
30% chance of snow Wednesday Night Wednesday Night... A 30 percent chance of snow showers. Mostly cloudy, with a low around 9.
30% chance of snow Thursday Thursday... A 30 percent chance of snow. Mostly cloudy, with a high near 24.
30% chance of snow Thursday Night Thursday Night... A 30 percent chance of snow showers. Mostly cloudy, with a low around 5.
20% chance of snow Friday Friday... A 20 percent chance of snow showers. Partly sunny, with a high near 15.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow showers. Mostly cloudy, with a low around -2.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 11.
Current Radar Image


Sun Almanac for Sullivan, Wisconsin
Sunrise: 07:12 AM
Sunset: 4:20 PM
Civil Sunrise:06:40 AM
Civil Sunset: 4:52 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:27 PM
Astro Sunrise: 05:30 AM
Astro Sunset: 6:02 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.