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.

Fair

51°F

11°C

Humidity 96%
Wind Speed Calm
Barometer 29.92 in (1013.5 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 20 Jun 11:55 pm CDT
Extended Forecast for

4 Miles ENE Viroqua WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 72. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 51. East wind around 6 mph becoming light and variable after midnight.

    Low: 51 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Northeast wind around 7 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. North wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Light southwest wind.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 56. Southwest wind around 6 mph. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. West wind 5 to 8 mph.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 53. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 53 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. Light and variable wind.
Sunday
A 30 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 72. Light east wind becoming southeast 5 to 10 mph in the morning.
Sunday Night
A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 51. East wind around 6 mph becoming light and variable after midnight.
Monday
Mostly sunny, with a high near 77. Northeast wind around 7 mph.
Monday Night
Partly cloudy, with a low around 52. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 77. Light southwest wind.
Tuesday Night
Showers and possibly a thunderstorm. Low around 56. Southwest wind around 6 mph. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. West wind 5 to 8 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 53. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 75. Northwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 53. Light northwest wind.
Friday
Mostly sunny, with a high near 78. Calm wind.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind 5 to 13 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Viroqua WI
 43.58°N 90.83°W
Last Update:
12:06 am CDT Jun 21, 2026
Forecast Valid:
12am CDT Jun 21, 2026-6pm CDT Jun 27, 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