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.

Fair

53°F

12°C

Humidity 97%
Wind Speed Calm
Barometer 29.88 in (1012.0 mb)
Dewpoint 52°F (11°C)
Visibility 9.00 mi
Last update 25 Jun 3:55 am CDT
Extended Forecast for

Tomah WI

  • Today

    Today: A slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 75. Northwest wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 75 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 53. North wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 78. Calm wind becoming east 5 to 8 mph in the morning.

    High: 78 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. East wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 61. Southeast wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 88. Breezy, with a southeast wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 88 °F

    Slight Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. South wind 7 to 14 mph, with gusts as high as 25 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 94. Breezy, with a south wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 94 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 75. Northwest wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 53. North wind around 6 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 78. Calm wind becoming east 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 53. East wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Calm wind becoming southeast 5 to 8 mph in the morning.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 61. Southeast wind 6 to 8 mph, with gusts as high as 18 mph.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 88. Breezy, with a southeast wind 8 to 16 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 72. South wind 7 to 14 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 94. Breezy, with a south wind 8 to 16 mph, with gusts as high as 26 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. Breezy, with a south wind 9 to 16 mph, with gusts as high as 28 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind 6 to 9 mph, with gusts as high as 21 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind around 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
3:47 am CDT Jun 25, 2026
Forecast Valid:
4am CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation