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

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

A Few Clouds

42°F

6°C

Humidity 30%
Wind Speed NW 12 G 17 mph
Barometer 30.29 in (1026.8 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 6 Apr 5:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly clear, with a low around 15. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 46. Calm wind becoming south around 5 mph in the afternoon.

    High: 46 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Snow showers likely before 2am, then rain showers likely. Increasing clouds, with a low around 33. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 33 °F

    Slight Chance
    Snow Showers
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 65. Breezy, with a south wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 1am. Partly cloudy, with a low around 36. Southwest wind 5 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 57. West wind 5 to 8 mph.

    High: 57 °F

    Sunny then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 58. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 15. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 46. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Snow showers likely before 2am, then rain showers likely. Increasing clouds, with a low around 33. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday
Showers likely, mainly after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 65. Breezy, with a south wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, mainly before 1am. Partly cloudy, with a low around 36. Southwest wind 5 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 57. West wind 5 to 8 mph.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 34. Calm wind.
Friday
Mostly sunny, with a high near 58. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 32. Calm wind.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 61. Calm wind becoming southeast 5 to 8 mph in the morning.
Saturday Night
Showers likely. Mostly cloudy, with a low around 47. Southeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. South wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm. Low around 57. South wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Monday
Showers likely. Mostly cloudy, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
6:26 pm CDT Apr 6, 2026
Forecast Valid:
7pm CDT Apr 6, 2026-6pm CDT Apr 13, 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