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

50°F

10°C

Humidity 97%
Wind Speed Calm
Barometer 29.93 in (1013.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 21 Jun 12:55 am CDT
Extended Forecast for

4 Miles WNW Cashton WI

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 55. Light southeast wind.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 3pm. Mostly cloudy, with a high near 73. East wind 3 to 8 mph.

    High: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 52. East wind around 6 mph becoming calm.

    Low: 52 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Northeast wind 5 to 8 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 57. Southwest wind around 6 mph. Chance of precipitation is 90%.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Southwest wind around 7 mph becoming west in the afternoon.

    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 54. Northwest wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 55. Light southeast wind.
Sunday
A 20 percent chance of showers after 3pm. Mostly cloudy, with a high near 73. East wind 3 to 8 mph.
Sunday Night
A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 52. East wind around 6 mph becoming calm.
Monday
Mostly sunny, with a high near 77. Northeast wind 5 to 8 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 57. Southwest wind around 6 mph. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Southwest wind around 7 mph becoming west in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 54. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 75. Northwest wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 54. Light north wind.
Friday
Mostly sunny, with a high near 79. Calm wind.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57. Light southeast wind.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind 6 to 13 mph, with gusts as high as 22 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Cashton WI
 43.78°N 90.85°W
Last Update:
12:06 am CDT Jun 21, 2026
Forecast Valid:
1am 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