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.

Light Rain

64°F

18°C

Humidity 84%
Wind Speed NE 10 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Sep 3:53 pm CDT
Extended Forecast for

Madison WI

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

  • This Afternoon

    This Afternoon: Showers likely. Mostly cloudy, with a high near 70. East wind around 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers, then showers and possibly a thunderstorm after 10pm. 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 before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 73. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 73 °F

    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 58. Northeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 58 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 68. Breezy, with a northeast wind 15 to 20 mph.

    High: 68 °F

    Chance
    Showers and
    Breezy

  • 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 10 to 15 mph.

    Low: 48 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Showers likely. Mostly cloudy, with a high near 70. East wind around 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers, then showers and possibly a thunderstorm after 10pm. 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 before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 73. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 58. Northeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 68. Breezy, with a northeast wind 15 to 20 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 10 to 15 mph.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 47.
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
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ABOUT THIS FORECAST

 
Point Forecast:
Madison WI
 43.07°N 89.4°W (Elev. 879 ft)
Last Update:
3:57 pm CDT Sep 18, 2026
Forecast Valid:
4pm 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