Waterloo, Wisconsin Weather
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Click for Frost Advisory for Waterloo, Wisconsin
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Weather Forecast for Waterloo, Wisconsin : Jefferson County
Issued: 6:11 am CDT Oct 20, 2025 Latitude: 43.1838844 Longitude: -88.9884421 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Increasing Clouds on Today 80% chance of rain on Tonight 70% chance of rain on Tuesday Mostly Cloudy on Wednesday Sunny on Thursday Mostly Sunny on Friday Partly Sunny on Saturday Partly Sunny on Sunday
High: 65°F Low: 41°F High: 50°F High: 50°F High: 55°F High: 60°F High: 62°F High: 63°F
Low: 39°F Low: 32°F Low: 31°F Low: 37°F Low: 41°F  
Increasing Clouds Rain Rain Mostly Cloudy Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
WATERTOWN - (KRYV)
34°
Clear
as of 5:55 AM CDST
Rel. Humidity: 93%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MADISON - (KMSN)
39°
Clear
as of 5:53 AM CDST
Rel. Humidity: 86%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
6 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
JUNEAU - (KUNU)
36°
Clear
as of 6:15 AM CDST
Rel. Humidity: 93%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
5 MPH
130° Southeast
Cloud Level(s): Clear
Current Conditions at
WAUKESHA - (KUES)
39°
Clear
as of 5:45 AM CDST
Rel. Humidity: 80%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
3 MPH
160° South
Cloud Level(s): Clear
Increasing Clouds on Today Today... Areas of frost between 7am and 8am. Otherwise, increasing clouds, with a high near 65. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
80% chance of rain Tonight Tonight... Showers, mainly before midnight. Low around 41. South wind 10 to 15 mph becoming west in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
70% chance of rain Tuesday Tuesday... Showers likely, mainly after 1pm. Increasing clouds, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
40% chance of rain Tuesday Night Tuesday Night... A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 39. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 50. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Cloudy on Wednesday Night Wednesday Night... Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 32. Northwest wind 5 to 15 mph.
Sunny on Thursday Thursday... Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 55. Northwest wind 5 to 10 mph.
Mostly Clear on Thursday Night Thursday Night... Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.
Mostly Sunny on Friday Friday... Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 60.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 37.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 62.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 41.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 63.
Current Radar Image


Sun Almanac for Waterloo, Wisconsin
Sunrise: 07:16 AM
Sunset: 6:05 PM
Civil Sunrise:06:48 AM
Civil Sunset: 6:34 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 7:07 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 7:40 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.