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

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: A 40 percent chance of showers. Mostly cloudy, with a steady temperature around 75. East wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 75 °F

    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 7pm. Mostly cloudy, with a low around 61. East wind 3 to 6 mph.

    Low: 61 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. East wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. East wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Chance
    Showers then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 81. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 82 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. Calm wind.

    High: 80 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers. Mostly cloudy, with a steady temperature around 75. East wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 30 percent chance of showers, mainly before 7pm. Mostly cloudy, with a low around 61. East wind 3 to 6 mph.
Friday
A slight chance of showers between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. East wind 8 to 11 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. East wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 81. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 65. Calm wind.
Sunday
Partly sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 57. Calm wind.
Monday
Sunny, with a high near 80. Calm wind.
Monday Night
Mostly clear, with a low around 57. Calm wind.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 80. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Light southwest wind.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56. Light and variable wind.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 78. Calm wind.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
1:26 pm CDT Aug 13, 2026
Forecast Valid:
3pm CDT Aug 13, 2026-6pm CDT Aug 20, 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