National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Burlington Municipal Airport (KBUU)

Lat: 42.69°NLon: 88.31°WElev: 778ft.

Overcast

45°F

7°C

Humidity 74%
Wind Speed E 8 mph
Barometer 29.99 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 30 Apr 3:35 pm CDT
Extended Forecast for

Williams Bay WI

Frost Advisory May 1, 12:00am until May 1, 08:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: Showers. High near 53. North wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Showers

  • Tonight

    Tonight: Showers before 1am, then scattered sprinkles between 1am and 2am. Patchy frost after 1am. Low around 34. East wind around 5 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Showers then
    Isolated
    Showers

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Areas of frost before 9am. Otherwise, partly sunny, with a high near 49. North wind 5 to 10 mph.

    High: 49 °F

    Areas Frost
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Widespread frost, mainly after 2am. Otherwise, partly cloudy, with a low around 32. Northeast wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 53. Calm wind becoming northwest around 5 mph in the morning.

    High: 53 °F

    Frost then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Southwest wind around 5 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers. Partly sunny, with a high near 61. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph.

    Low: 45 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. Breezy.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

Detailed Forecast

This Afternoon
Showers. High near 53. North wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers before 1am, then scattered sprinkles between 1am and 2am. Patchy frost after 1am. Low around 34. East wind around 5 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of showers after 1pm. Areas of frost before 9am. Otherwise, partly sunny, with a high near 49. North wind 5 to 10 mph.
Friday Night
Widespread frost, mainly after 2am. Otherwise, partly cloudy, with a low around 32. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 53. Calm wind becoming northwest around 5 mph in the morning.
Saturday Night
Partly cloudy, with a low around 38. Southwest wind around 5 mph.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 61. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. Breezy.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 61.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 56.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williams Bay WI
 42.57°N 88.54°W (Elev. 869 ft)
Last Update:
2:57 pm CDT Apr 30, 2026
Forecast Valid:
3pm CDT Apr 30, 2026-6pm CDT May 7, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation