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

Hazardous Weather Conditions

Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Partly Cloudy

75°F

24°C

Humidity 74%
Wind Speed S 14 mph
Barometer 29.95 in (1013.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 21 Aug 2:53 pm CDT
Extended Forecast for

Waterloo WI

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 79. Southwest wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 60. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. Northwest wind 5 to 15 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. Northwest wind 5 to 10 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77. Northwest wind 5 to 10 mph.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. Northwest wind around 5 mph becoming calm.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 79. Southwest wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 60. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 79. Northwest wind 5 to 15 mph.
Saturday Night
Mostly clear, with a low around 53. Northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 77. Northwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 53. Northwest wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 78. Calm wind.
Monday Night
Partly cloudy, with a low around 57. Calm wind.
Tuesday
Partly sunny, with a high near 80.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo WI
 43.21°N 88.97°W (Elev. 823 ft)
Last Update:
2:42 pm CDT Aug 21, 2026
Forecast Valid:
2pm CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation