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 72%
Wind Speed Calm
Barometer 29.94 in (1013.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 2 Sep 10:53 am CDT
Extended Forecast for

Deerfield WI

  • Today

    Today: Mostly sunny, with a high near 88. Heat index values as high as 96. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 87. Southeast wind around 5 mph becoming west in the morning.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 69. Southeast wind around 5 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Partly sunny, with a high near 87. Southwest wind around 5 mph becoming east in the morning. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Calm wind becoming east around 5 mph.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.

    High: 85 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 88. Heat index values as high as 96. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 87. Southeast wind around 5 mph becoming west in the morning.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 69. Southeast wind around 5 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Partly sunny, with a high near 87. Southwest wind around 5 mph becoming east in the morning. Chance of precipitation is 20%.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Calm wind becoming east around 5 mph.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.
Labor Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Deerfield WI
 43.06°N 89.07°W (Elev. 899 ft)
Last Update:
11:26 am CDT Sep 2, 2026
Forecast Valid:
11am CDT Sep 2, 2026-6pm CDT Sep 8, 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