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

54°F

12°C

Humidity 68%
Wind Speed Calm
Barometer 29.84 in (1011.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 20 Mar 11:55 am CDT
Extended Forecast for

2 Miles N Ontario WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 61. Northwest wind around 6 mph.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42. Light and variable wind becoming northeast around 6 mph after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 50. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 50 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25. North wind around 6 mph becoming calm in the evening.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49. Light and variable wind.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. Calm wind becoming south around 5 mph after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. South wind 6 to 9 mph becoming west in the afternoon.

    High: 54 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 61. Northwest wind around 6 mph.
Tonight
Partly cloudy, with a low around 36. Calm wind.
Saturday
Mostly sunny, with a high near 74. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 42. Light and variable wind becoming northeast around 6 mph after midnight.
Sunday
Mostly cloudy, with a high near 50. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 25. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 49. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 33. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 54. South wind 6 to 9 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 31. Northwest wind around 5 mph becoming east after midnight.
Wednesday
Mostly cloudy, with a high near 51. Southeast wind 5 to 7 mph.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37. Southeast wind 5 to 8 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 54. Southwest wind 8 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
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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:
11:46 am CDT Mar 20, 2026
Forecast Valid:
12pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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