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

78°F

26°C

Humidity 55%
Wind Speed Calm
Barometer 29.95 in (1014.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 2 Aug 11:55 am CDT
Extended Forecast for

2 Miles ESE Westby WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 80. Northeast wind around 6 mph.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the morning.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. South wind 5 to 7 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. South wind 7 to 9 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 81 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms, then a chance of showers after 7am. Partly sunny, with a high near 77. Calm wind. Chance of precipitation is 30%.

    High: 77 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 80. Northeast wind around 6 mph.
Tonight
Mostly clear, with a low around 58. Calm wind.
Monday
Sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 61. South wind 5 to 7 mph.
Tuesday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. South wind 7 to 9 mph becoming west in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers and thunderstorms, then a chance of showers after 7am. Partly sunny, with a high near 77. Calm wind. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 54. Calm wind.
Thursday
Mostly sunny, with a high near 80. Light and variable wind.
Thursday Night
Mostly clear, with a low around 58. Light southwest wind.
Friday
Mostly sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the morning.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. Southwest wind 3 to 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Calm wind becoming southwest 5 to 8 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Westby WI
 43.65°N 90.83°W
Last Update:
11:51 am CDT Aug 2, 2026
Forecast Valid:
12pm CDT Aug 2, 2026-6pm CDT Aug 8, 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