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

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Mostly Cloudy

48°F

9°C

Humidity 74%
Wind Speed Calm
Barometer 29.72 in (1006.5 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 9 Mar 9:53 pm CDT
Extended Forecast for

Rio WI

  • Tonight

    Tonight: Mostly clear, with a low around 36. Northeast wind 5 to 10 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 10 percent chance of showers after 5pm. Mostly sunny, with a high near 50. East wind 10 to 15 mph.

    High: 50 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Rain likely before 4am, then snow and freezing rain likely. Some thunder is also possible. Cloudy, with a low around 31. North wind 10 to 15 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.

    Low: 31 °F

    Showers
    Likely then
    Wintry Mix
    Likely

  • Wednesday

    Wednesday: Snow and freezing rain likely, possibly mixed with sleet before 7am, then a chance of rain, snow, and sleet between 7am and 10am, then a chance of snow after 10am. Cloudy, with a high near 39. Northwest wind around 15 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow and sleet accumulation of less than a half inch possible.

    High: 39 °F

    Wintry Mix
    Likely then
    Chance Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 24. Northwest wind 5 to 10 mph.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 43. West wind 5 to 10 mph becoming southwest in the afternoon.

    High: 43 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain and snow. Low around 33. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Rain/Snow

  • Friday

    Friday: A 20 percent chance of snow before 1pm. Mostly sunny, with a high near 44. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 44 °F

    Slight Chance
    Snow and
    Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 36. Northeast wind 5 to 10 mph.
Tuesday
A 10 percent chance of showers after 5pm. Mostly sunny, with a high near 50. East wind 10 to 15 mph.
Tuesday Night
Rain likely before 4am, then snow and freezing rain likely. Some thunder is also possible. Cloudy, with a low around 31. North wind 10 to 15 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.
Wednesday
Snow and freezing rain likely, possibly mixed with sleet before 7am, then a chance of rain, snow, and sleet between 7am and 10am, then a chance of snow after 10am. Cloudy, with a high near 39. Northwest wind around 15 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow and sleet accumulation of less than a half inch possible.
Wednesday Night
Mostly clear, with a low around 24. Northwest wind 5 to 10 mph.
Thursday
Increasing clouds, with a high near 43. West wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Rain and snow. Low around 33. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A 20 percent chance of snow before 1pm. Mostly sunny, with a high near 44. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 26.
Saturday
A chance of snow before 1pm, then a chance of rain and snow. Cloudy, with a high near 41. Chance of precipitation is 40%.
Saturday Night
Rain and snow likely. Cloudy, with a low around 29. Chance of precipitation is 70%.
Sunday
Rain and snow likely. Cloudy, with a high near 37. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 13.
Monday
Mostly cloudy, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rio WI
 43.46°N 89.23°W (Elev. 951 ft)
Last Update:
10:34 pm CDT Mar 9, 2026
Forecast Valid:
10pm CDT Mar 9, 2026-6pm CDT Mar 16, 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