Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

10°F

-12°C

Humidity 70%
Wind Speed Calm
Barometer 30.54 in (1036.5 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Last update 31 Jan 3:55 am CST
Extended Forecast for

Tomah WI

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 4. Wind chill values as low as -7. Northwest wind around 6 mph.

    Low: 4 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 21. Wind chill values as low as -9. Northwest wind around 5 mph becoming calm  in the morning.

    High: 21 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 5. Wind chill values as low as -4. Calm wind becoming south around 6 mph after midnight.

    Low: 5 °F

    Partly Cloudy

  • Sunday

    Sunday: Snow likely, mainly after noon.  Partly sunny, with a high near 24. Wind chill values as low as -3. South wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of snow before midnight.  Mostly cloudy, with a low around 12. Light and variable wind becoming west around 5 mph after midnight.  New snow accumulation of less than a half inch possible.

    Low: 12 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24. Northwest wind 3 to 6 mph.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 6. Calm wind.

    Low: 6 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23. Light north wind.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 1. Calm wind.

    Low: 1 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 4. Wind chill values as low as -7. Northwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 21. Wind chill values as low as -9. Northwest wind around 5 mph becoming calm in the morning.
Saturday Night
Partly cloudy, with a low around 5. Wind chill values as low as -4. Calm wind becoming south around 6 mph after midnight.
Sunday
Snow likely, mainly after noon. Partly sunny, with a high near 24. Wind chill values as low as -3. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 12. Light and variable wind becoming west around 5 mph after midnight. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 24. Northwest wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 6. Calm wind.
Tuesday
Mostly sunny, with a high near 23. Light north wind.
Tuesday Night
Partly cloudy, with a low around 1. Calm wind.
Wednesday
Sunny, with a high near 25. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 8. Light west wind.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 33. Light southwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 32. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
3:16 am CST Jan 31, 2026
3am CST Jan 31, 2026-6pm CST Feb 6, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database