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.

Overcast

57°F

14°C

Humidity 53%
Wind Speed N 3 mph
Barometer 29.79 in (1009.5 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 26 Mar 12:55 pm CDT
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: Showers likely, mainly between 2pm and 3pm. Cloudy, with a high near 57. North wind 11 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Showers
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 22. North wind 5 to 14 mph, with gusts as high as 24 mph.

    Low: 22 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. Breezy, with a light and variable wind becoming northwest 12 to 17 mph in the morning. Winds could gust as high as 25 mph.

    High: 43 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 19. Northwest wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 24 mph.

    Low: 19 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 52. Southwest wind 5 to 15 mph, with gusts as high as 24 mph.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35. South wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66. Southwest wind 5 to 7 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. South wind around 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 68. Southwest wind 5 to 7 mph becoming northeast in the afternoon.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers likely, mainly between 2pm and 3pm. Cloudy, with a high near 57. North wind 11 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 20 percent chance of showers before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 22. North wind 5 to 14 mph, with gusts as high as 24 mph.
Friday
Mostly sunny, with a high near 43. Breezy, with a light and variable wind becoming northwest 12 to 17 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 19. Northwest wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 24 mph.
Saturday
Mostly sunny, with a high near 52. Southwest wind 5 to 15 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 35. South wind 6 to 8 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 66. Southwest wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 43. South wind around 6 mph.
Monday
Mostly sunny, with a high near 68. Southwest wind 5 to 7 mph becoming northeast in the afternoon.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. East wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 61. Southeast wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 42. Southeast wind around 10 mph becoming south after midnight. Winds could gust as high as 21 mph.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 60. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
12:11 pm CDT Mar 26, 2026
Forecast Valid:
1pm CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation