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Aztalan, Wisconsin Weather Forecast
Aztalan, Wisconsin Weather
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Weather Forecast for Aztalan, Wisconsin : Jefferson County
Issued: 12:21 am CST Jan 20, 2026 Latitude: 43.0727787 Longitude: -88.8623285 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Overnight Increasing Clouds on Tuesday 30% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday 20% chance of snow on Sunday Mostly Sunny on Monday
Low: -5°F High: 14°F High: 23°F High: 15°F High: -5°F High: -2°F High: 8°F High: 15°F
Low: 10 °F Low: 5 °F Low: -13°F Low: -18°F Low: -14°F Low: -4°F  
Mostly Clear Increasing Clouds Snow Mostly Sunny Mostly Sunny Mostly Sunny Snow Mostly Sunny
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Current Conditions at
WATERTOWN - (KRYV)
-6°
Clear
as of 12:35 AM CST
Rel. Humidity: 76%
Dew Point: -11°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MADISON - (KMSN)
-0°
Clear
as of 11:53 PM CST
Rel. Humidity: 70%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
3 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
JUNEAU - (KUNU)
-8°
Clear
as of 12:35 AM CST
Rel. Humidity: 76%
Dew Point: -13°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
5 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
WAUKESHA - (KUES)
-0°
Clear
as of 12:35 AM CST
Rel. Humidity: 70%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
8 MPH
250° West
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around -5. Wind chill values between -10 and -15. West wind around 5 mph.

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

90% chance of snow Tuesday Night Tuesday Night... Snow, mainly after 8pm. Temperature falling to near 10 by 8pm, then rising to around 18 during the remainder of the night. South wind around 5 mph becoming west after midnight. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

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

50% chance of 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 25 mph.

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

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

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

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

Mostly Sunny on Saturday Saturday... Mostly sunny and cold, with a high near -2.

20% chance of snow Saturday Night Saturday Night... A 20 percent chance of snow. Mostly cloudy, with a low around -14.

20% chance of snow Sunday Sunday... A 20 percent chance of snow. Mostly sunny and cold, with a high near 8.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around -4.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 15.

Current Radar Image


Sun Almanac for Aztalan, Wisconsin
Sunrise: 07:21 AM
Sunset: 4:52 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:58 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:32 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.