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 >

Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Light Rain

65°F

18°C

Humidity 97%
Wind Speed E 5 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 64°F (18°C)
Visibility 9.00 mi
Last update 19 Sep 5:53 pm CDT
Extended Forecast for

Waunakee WI

Flood Watch September 19, 06:26pm until September 20, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 19, 06:26pm until September 20, 07:00am

    NOW until 7:00am Sun

    Flood Watch

  • Tonight

    Low: 58 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 7am.  Cloudy, then gradually becoming mostly sunny, with a high near 66. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 66 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 1pm.  Mostly cloudy, with a high near 63. East wind 10 to 15 mph.

    High: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly after 1am.  Mostly cloudy, with a low around 48. Northeast wind 5 to 10 mph.

    Low: 48 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm.  Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph.

    High: 62 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46. Northeast wind around 5 mph.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 65. Northeast wind 5 to 10 mph.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Cloudy, with a low around 58. Light east wind becoming northeast 5 to 10 mph in the evening. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A 30 percent chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 66. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 52. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Monday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 63. East wind 10 to 15 mph.
Monday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Northeast wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 46. Northeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 65. Northeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 51.
Friday
Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Waunakee WI
 43.18°N 89.42°W (Elev. 899 ft)
6:21 pm CDT Sep 19, 2026
6pm CDT Sep 19, 2026-6pm CDT Sep 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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