National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Light Unknown Precip

20°F

-7°C

Humidity 79%
Wind Speed W 12 mph
Barometer 29.62 in (1004.5 mb)
Dewpoint 15°F (-9°C)
Visibility 6.00 mi
Wind Chill8°F (-13°C)
Last update 16 Jan 7:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Snow. Low around 11. Wind chill values as low as zero. Northwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 11 °F

    Snow

  • Saturday

    Saturday: Snow likely before noon, then a chance of flurries between noon and 1pm. Mostly cloudy, with a high near 18. Wind chill values as low as zero. Northwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Snow Likely
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 2. Wind chill values as low as -5. Northwest wind 3 to 8 mph. Winds could gust as high as 21 mph.

    Low: 2 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow likely. Mostly cloudy, with a high near 18. Wind chill values as low as -3. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 18 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -6. Northwest wind around 11 mph, with gusts as high as 28 mph.

    Low: -6 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.

    High: 4 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around -3. West wind 3 to 6 mph. Winds could gust as high as 20 mph.

    Low: -3 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 15. Southwest wind 3 to 6 mph.

    High: 15 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 7. Calm wind.

    Low: 7 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Snow. Low around 11. Wind chill values as low as zero. Northwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow likely before noon, then a chance of flurries between noon and 1pm. Mostly cloudy, with a high near 18. Wind chill values as low as zero. Northwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 2. Wind chill values as low as -5. Northwest wind 3 to 8 mph. Winds could gust as high as 21 mph.
Sunday
Snow likely. Mostly cloudy, with a high near 18. Wind chill values as low as -3. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
Mostly cloudy, with a low around -6. Northwest wind around 11 mph, with gusts as high as 28 mph.
M.L.King Day
Partly sunny and cold, with a high near 4. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around -3. West wind 3 to 6 mph. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 15. Southwest wind 3 to 6 mph.
Tuesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 7. Calm wind.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 21. Calm wind becoming west around 6 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 4. Light northwest wind.
Thursday
Partly sunny, with a high near 16. Calm wind becoming northwest around 6 mph.
Thursday Night
Mostly cloudy, with a low around 3. Light and variable wind.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 21. Calm wind becoming southwest around 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
6:56 pm CST Jan 16, 2026
Forecast Valid:
8pm CST Jan 16, 2026-6pm CST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation