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

Heavy Rainfall Continues from the Southwest to the Plains; Severe Thunderstorms in the Southern Plains

Pacific tropical moisture wrapping into a storm will continue a multi-day heavy rainfall event this week that will impact the Southwest into the Plains. Scattered severe thunderstorms capable of mainly severe wind gusts appear possible across portions of the southern Plains this afternoon into tonight. There is also a risk of isolated severe winds gusts and tornadoes in Kansas into Nebraska. Read More >

Hazardous Weather Conditions

Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Overcast

65°F

18°C

Humidity 97%
Wind Speed SW 6 mph
Barometer 29.87 in (1011.1 mb)
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 30 Sep 9:53 pm CDT
Extended Forecast for

Sun Prairie WI

  • Tonight

    Tonight: Showers likely, then showers and possibly a thunderstorm after 1am. Patchy fog. Low around 64. Southwest wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 64 °F

    Showers
    Likely and
    Patchy Fog
    then Showers
    and Areas Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm before noon, then scattered showers. Areas of fog before noon. High near 66. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 66 °F

    Showers and
    Areas Fog
    then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Cloudy during the early evening, then gradual clearing, with a low around 47. North wind around 5 mph.

    Low: 47 °F

    Gradual
    Clearing

  • Friday

    Friday: Sunny, with a high near 63. North wind 5 to 10 mph.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 39. Calm wind.

    Low: 39 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 65. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. Southwest wind around 5 mph.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68. West wind 5 to 10 mph becoming northwest in the afternoon.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers likely, then showers and possibly a thunderstorm after 1am. Patchy fog. Low around 64. Southwest wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday
Showers and possibly a thunderstorm before noon, then scattered showers. Areas of fog before noon. High near 66. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
Cloudy during the early evening, then gradual clearing, with a low around 47. North wind around 5 mph.
Friday
Sunny, with a high near 63. North wind 5 to 10 mph.
Friday Night
Clear, with a low around 39. Calm wind.
Saturday
Sunny, with a high near 65. Light and variable wind becoming south 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 46. Southwest wind around 5 mph.
Sunday
Sunny, with a high near 68. West wind 5 to 10 mph becoming northwest in the afternoon.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 61.
Monday Night
Clear, with a low around 40.
Tuesday
Sunny, with a high near 64.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sun Prairie WI
 43.17°N 89.24°W (Elev. 965 ft)
Last Update:
10:16 pm CDT Sep 30, 2026
Forecast Valid:
10pm CDT Sep 30, 2026-6pm CDT Oct 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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