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

54°F

12°C

Humidity 53%
Wind Speed Calm
Barometer 30.04 in (1018.2 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 19 Mar 1:55 pm CDT
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 54. Calm wind.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Calm wind becoming southwest around 6 mph after midnight.

    Low: 37 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 56. Northwest wind 3 to 6 mph.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 39. South wind around 6 mph becoming northeast after midnight.

    Low: 39 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 50. North wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 50 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23. North wind 3 to 7 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 47. Light and variable wind becoming northwest around 5 mph.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 54. Calm wind.
Tonight
Mostly cloudy, with a low around 37. Calm wind becoming southwest around 6 mph after midnight.
Friday
Mostly cloudy, with a high near 56. Northwest wind 3 to 6 mph.
Friday Night
Mostly cloudy, with a low around 35. Calm wind.
Saturday
Mostly sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 39. South wind around 6 mph becoming northeast after midnight.
Sunday
Mostly cloudy, with a high near 50. North wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 23. North wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 47. Light and variable wind becoming northwest around 5 mph.
Monday Night
Mostly cloudy, with a low around 32. Calm wind becoming south around 6 mph in the evening.
Tuesday
Mostly cloudy, with a high near 53. West wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Light and variable wind becoming east around 5 mph after midnight.
Wednesday
Mostly cloudy, with a high near 51. East wind 5 to 9 mph.
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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:
2:44 pm CDT Mar 19, 2026
Forecast Valid:
2pm CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
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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