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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Overcast

60°F

16°C

Humidity 90%
Wind Speed E 13 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 18 Sep 8:53 pm CDT
Extended Forecast for

Madison WI

Flood Watch September 19, 01:00am until September 19, 07:00pm
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rainfall. Low around 60. East wind around 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 60 °F

    Showers
    Likely then
    Heavy Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 71. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 71 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers. Low around 58. North wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    Low: 58 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 66. Northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53. Breezy, with a northeast wind 15 to 20 mph.

    Low: 53 °F

    Mostly Cloudy
    and Breezy

  • Monday

    Monday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63. East wind around 15 mph.

    High: 63 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Northeast wind around 15 mph.

    Low: 48 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 62. Northeast wind 10 to 15 mph.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rainfall. Low around 60. East wind around 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Saturday
Showers and possibly a thunderstorm. High near 71. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday Night
Showers and possibly a thunderstorm before 10pm, then a chance of showers. Low around 58. North wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 66. Northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 53. Breezy, with a northeast wind 15 to 20 mph.
Monday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63. East wind around 15 mph.
Monday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Northeast wind around 15 mph.
Tuesday
Partly sunny, with a high near 62. Northeast wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Madison WI
 43.09°N 89.4°W (Elev. 850 ft)
Last Update:
9:52 pm CDT Sep 18, 2026
Forecast Valid:
10pm CDT Sep 18, 2026-6pm CDT Sep 25, 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