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

32°F

0°C

Humidity 74%
Wind Speed Calm
Barometer 30.11 in (1020.8 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 12 Nov 11:55 pm CST
Extended Forecast for

6 Miles SSE Ontario WI

  • Overnight

    Overnight: Partly cloudy, with a low around 23. Light and variable wind.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. Light north wind increasing to 5 to 9 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming clear, with a low around 20. Calm wind.

    Low: 20 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 46. Calm wind.

    High: 46 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 23. Calm wind.

    Low: 23 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 48. Calm wind.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 24. Calm wind.

    Low: 24 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 51. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 25. Light south wind.

    Low: 25 °F

    Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 23. Light and variable wind.
Friday
Mostly sunny, with a high near 43. Light north wind increasing to 5 to 9 mph.
Friday Night
Mostly cloudy, then gradually becoming clear, with a low around 20. Calm wind.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 46. Calm wind.
Saturday Night
Clear, with a low around 23. Calm wind.
Sunday
Sunny, with a high near 48. Calm wind.
Sunday Night
Clear, with a low around 24. Calm wind.
Monday
Sunny, with a high near 51. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Clear, with a low around 25. Light south wind.
Tuesday
Sunny, with a high near 55. Calm wind becoming south 5 to 8 mph in the morning.
Tuesday Night
Mostly clear, with a low around 32. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 57. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 40. South wind around 6 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 58. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Ontario WI
 43.64°N 90.56°W
Last Update:
12:06 am CST Nov 13, 2026
Forecast Valid:
12am CST Nov 13, 2026-6pm CST Nov 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation