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

11°F

-12°C

Humidity 70%
Wind Speed Calm
Barometer 30.55 in (1036.8 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Last update 23 Feb 6:55 am CST
Extended Forecast for

4 Miles SW Norwalk WI

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 22. Wind chill values as low as -5. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 22 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 11. Wind chill values as low as -1. Light southwest wind becoming south 8 to 13 mph after midnight. Winds could gust as high as 23 mph.

    Low: 11 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Snow likely before 3pm, then a chance of rain between 3pm and 5pm. Partly sunny, with a high near 33. Wind chill values as low as -1. Breezy, with a south wind 14 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Snow
    then
    Rain/Snow
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 9. Wind chill values as low as -5. Blustery, with a northwest wind 14 to 18 mph, with gusts as high as 28 mph.

    Low: 9 °F

    Mostly Cloudy
    and Blustery

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23. Northwest wind 8 to 13 mph becoming light west in the afternoon. Winds could gust as high as 22 mph.

    High: 23 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 9. Light and variable wind.

    Low: 9 °F

    Chance Snow

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 33. Light and variable wind becoming west 5 to 7 mph in the morning.

    High: 33 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 21. Southwest wind 6 to 9 mph.

    Low: 21 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 46. Southwest wind 9 to 13 mph, with gusts as high as 22 mph.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 22. Wind chill values as low as -5. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 11. Wind chill values as low as -1. Light southwest wind becoming south 8 to 13 mph after midnight. Winds could gust as high as 23 mph.
Tuesday
Snow likely before 3pm, then a chance of rain between 3pm and 5pm. Partly sunny, with a high near 33. Wind chill values as low as -1. Breezy, with a south wind 14 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
Mostly cloudy, with a low around 9. Wind chill values as low as -5. Blustery, with a northwest wind 14 to 18 mph, with gusts as high as 28 mph.
Wednesday
Mostly sunny, with a high near 23. Northwest wind 8 to 13 mph becoming light west in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 9. Light and variable wind.
Thursday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 33. Light and variable wind becoming west 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 21. Southwest wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 46. Southwest wind 9 to 13 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 20. West wind around 10 mph, with gusts as high as 21 mph.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 32. North wind around 11 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 9. North wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday
A 30 percent chance of snow. Mostly sunny, with a high near 25. Northeast wind around 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Norwalk WI
 43.8°N 90.7°W
Last Update:
5:21 am CST Feb 23, 2026
Forecast Valid:
7am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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Chance of Precipitation