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

50°F

10°C

Humidity 70%
Wind Speed Calm
Barometer 30.21 in (1023.5 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 20 May 2:55 am CDT
Extended Forecast for

2 Miles WNW Sparta / Fort McCoy Airport WI

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 64. Light north wind.

    High: 64 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Light east wind.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 64. East wind 5 to 8 mph.

    High: 64 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43. East wind 3 to 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. East wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely. Cloudy, with a low around 46. East wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly cloudy, with a high near 70. Light and variable wind.

    High: 70 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 43. Calm wind.
Wednesday
Increasing clouds, with a high near 64. Light north wind.
Wednesday Night
Mostly cloudy, with a low around 41. Light east wind.
Thursday
Partly sunny, with a high near 64. East wind 5 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 43. East wind 3 to 6 mph.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. East wind 6 to 13 mph, with gusts as high as 21 mph.
Friday Night
Showers likely. Cloudy, with a low around 46. East wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
A 20 percent chance of showers. Mostly cloudy, with a high near 70. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 50. Calm wind.
Sunday
Partly sunny, with a high near 79. Light west wind.
Sunday Night
Mostly clear, with a low around 52. Calm wind.
Memorial Day
Mostly sunny, with a high near 85. Calm wind becoming south around 5 mph.
Monday Night
Mostly clear, with a low around 57. Calm wind.
Tuesday
Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Sparta / Fort McCoy Airport WI
 43.97°N 90.78°W
Last Update:
1:26 am CDT May 20, 2026
Forecast Valid:
3am CDT May 20, 2026-6pm CDT May 26, 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