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

41°F

5°C

Humidity 98%
Wind Speed Calm
Barometer 30.37 in (1029.0 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 24 Sep 4:55 am CDT
Extended Forecast for

4 Miles N Sparta WI

  • Today

    Today: Increasing clouds, with a high near 67. Calm wind becoming southeast around 5 mph.

    High: 67 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 3am. Cloudy, with a low around 54. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 70. Light and variable wind.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. Light southeast wind.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 67. Calm wind.

    High: 67 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 67. Calm wind becoming southeast around 5 mph.
Tonight
A 40 percent chance of showers, mainly before 3am. Cloudy, with a low around 54. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly cloudy, with a high near 70. Light and variable wind.
Friday Night
Partly cloudy, with a low around 50. Calm wind.
Saturday
Partly sunny, with a high near 68. Calm wind becoming southeast 5 to 7 mph in the morning.
Saturday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. Light southeast wind.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 67. Calm wind.
Sunday Night
Partly cloudy, with a low around 48. Calm wind.
Monday
Mostly sunny, with a high near 71. Light and variable wind.
Monday Night
Partly cloudy, with a low around 53. Calm wind.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 69. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 54. South wind 5 to 8 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 65. North wind 7 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Sparta WI
 43.99°N 90.81°W
Last Update:
3:26 am CDT Sep 24, 2026
Forecast Valid:
5am CDT Sep 24, 2026-6pm CDT Sep 30, 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