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.

Mostly Cloudy

79°F

26°C

Humidity 74%
Wind Speed E 9 mph
Barometer 29.87 in (1011.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 11 Aug 1:53 pm CDT
Extended Forecast for

Waterloo WI

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 65. East wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy smoke after 5pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 83. Calm wind becoming south around 5 mph.

    High: 83 °F

    Areas Fog
    then Patchy
    Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke before 9pm. Mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Patchy Smoke
    then Mostly
    Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. Northeast wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. East wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 61. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. Chance of precipitation is 80%.

    High: 78 °F

    Showers

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 65. East wind around 5 mph becoming calm. Chance of precipitation is 20%.
Wednesday
Patchy smoke after 5pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 83. Calm wind becoming south around 5 mph.
Wednesday Night
Patchy smoke before 9pm. Mostly cloudy, with a low around 64. Calm wind.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 60. Northeast wind around 5 mph.
Friday
Mostly sunny, with a high near 77. East wind 5 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 61. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo WI
 43.19°N 89°W (Elev. 886 ft)
Last Update:
1:21 pm CDT Aug 11, 2026
Forecast Valid:
2pm CDT Aug 11, 2026-6pm CDT Aug 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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