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.

A Few Clouds

66°F

19°C

Humidity 71%
Wind Speed W 5 mph
Barometer 29.97 in (1015.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 Jun 9:55 am CDT
Extended Forecast for

2 Miles N Ontario WI

  • Today

    Today: Mostly sunny, with a high near 75. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 74. Calm wind becoming east around 6 mph in the afternoon.

    High: 74 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. East wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Calm wind becoming northeast around 5 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Calm wind.

    High: 77 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 55. Calm wind. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 76 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 75. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 74. Calm wind becoming east around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 51. East wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 77. Calm wind becoming northeast around 5 mph.
Monday Night
Partly cloudy, with a low around 52. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Calm wind.
Tuesday Night
Showers and possibly a thunderstorm. Low around 55. Calm wind. Chance of precipitation is 80%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 52. Light north wind.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77. Light north wind.
Thursday Night
Mostly clear, with a low around 53. Calm wind.
Friday
Mostly sunny, with a high near 79. Calm wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Ontario WI
 43.75°N 90.58°W
Last Update:
9:26 am CDT Jun 20, 2026
Forecast Valid:
10am CDT Jun 20, 2026-6pm CDT Jun 26, 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