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.

Partly Cloudy

61°F

16°C

Humidity 51%
Wind Speed Calm
Barometer 29.59 in (1002.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 22 Mar 12:55 am CDT
Extended Forecast for

Sparta WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 38. Light and variable wind becoming north around 6 mph.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of sprinkles before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 48. North wind 6 to 8 mph.

    High: 48 °F

    Chance
    Sprinkles

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. North wind around 5 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50. Calm wind.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. Calm wind becoming south around 5 mph after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57. Southwest wind 3 to 7 mph.

    High: 57 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Light south wind.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 56. Southeast wind 5 to 7 mph.

    High: 56 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. Light southeast wind.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 38. Light and variable wind becoming north around 6 mph.
Sunday
A chance of sprinkles before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 48. North wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 23. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 50. Calm wind.
Monday Night
Mostly cloudy, with a low around 35. Calm wind becoming south around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 57. Southwest wind 3 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Light south wind.
Wednesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 56. Southeast wind 5 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 40. Light southeast wind.
Thursday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 57. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 24. North wind 6 to 8 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 43. Northwest wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 24. Light southwest wind.
Saturday
Mostly sunny, with a high near 51. Light southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
1:11 am CDT Mar 22, 2026
Forecast Valid:
1am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
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Additional Resources

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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