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

Tracking Winter Weather and Frigid Temperatures This Weekend

Another clipper will drop into the Northern Plains and Upper Midwest into Sunday with snow and gusty winds contributing to some areas of blizzard conditions and snow squalls. Impactful snowfall will occur up and down the East Coast Sunday extending from the western Florida Panhandle to Maine. Read More >

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

-3°F

-19°C

Humidity 77%
Wind Speed Calm
Barometer 29.96 in (1017.1 mb)
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Last update 18 Jan 6:55 am CST
Extended Forecast for

Tomah WI

Cold Weather Advisory January 19, 03:00am until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Today

    Today: Snow, mainly after 1pm. High near 14. Wind chill values as low as -11. Southwest wind 6 to 9 mph. Chance of precipitation is 100%. Total daytime snow accumulation of around an inch possible.

    High: 14 °F

    Slight Chance
    Snow then
    Snow

  • Tonight

    Tonight: Snow, mainly before 9pm. Patchy blowing snow between midnight and 1am. Low around -6. Wind chill values as low as -25. Blustery, with a northwest wind 6 to 11 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: -6 °F

    Blustery.
    Snow then
    Patchy
    Blowing Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 3. Wind chill values as low as -28. Blustery, with a northwest wind 9 to 16 mph, with gusts as high as 30 mph.

    High: 3 °F

    Mostly Sunny
    and Blustery
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -7. Wind chill values as low as -16. West wind 5 to 7 mph, with gusts as high as 20 mph.

    Low: -7 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 14. Southwest wind around 6 mph becoming light and variable in the afternoon.

    High: 14 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 6. Calm wind becoming west around 5 mph after midnight. New snow accumulation of 1 to 2 inches possible.

    Low: 6 °F

    Chance Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow. Mostly cloudy, with a high near 20. West wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 20 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 0. West wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 0 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 16. West wind 5 to 8 mph.

    High: 16 °F

    Partly Sunny

Detailed Forecast

Today
Snow, mainly after 1pm. High near 14. Wind chill values as low as -11. Southwest wind 6 to 9 mph. Chance of precipitation is 100%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow, mainly before 9pm. Patchy blowing snow between midnight and 1am. Low around -6. Wind chill values as low as -25. Blustery, with a northwest wind 6 to 11 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
M.L.King Day
Mostly sunny and cold, with a high near 3. Wind chill values as low as -28. Blustery, with a northwest wind 9 to 16 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around -7. Wind chill values as low as -16. West wind 5 to 7 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 14. Southwest wind around 6 mph becoming light and variable in the afternoon.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 6. Calm wind becoming west around 5 mph after midnight. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 30 percent chance of snow. Mostly cloudy, with a high near 20. West wind 5 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 0. West wind 6 to 8 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 16. West wind 5 to 8 mph.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 3. Light and variable wind becoming northwest around 5 mph after midnight.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 15. Northwest wind 5 to 8 mph.
Friday Night
Mostly cloudy, with a low around -8. North wind around 5 mph.
Saturday
A 20 percent chance of snow. Partly sunny and cold, with a high near 5. North wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
6:26 am CST Jan 18, 2026
Forecast Valid:
8am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation