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.

A Few Clouds

87°F

31°C

Humidity 57%
Wind Speed Calm
Barometer 29.97 in (1014.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 3 Jul 11:55 am CDT
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 89. South wind 5 to 7 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 70. Calm wind. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A 10 percent chance of showers and thunderstorms before 7am. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 92. Heat index values as high as 99. Light south wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 92 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73. South wind 3 to 6 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Southwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 66. West wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 81. Northwest wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Light and variable wind.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 89. South wind 5 to 7 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 70. Calm wind. New rainfall amounts between a quarter and half of an inch possible.
Independence Day
A 10 percent chance of showers and thunderstorms before 7am. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 92. Heat index values as high as 99. Light south wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Partly cloudy, with a low around 73. South wind 3 to 6 mph.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Southwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 66. West wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 81. Northwest wind 3 to 7 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 61. Light and variable wind.
Monday
Mostly sunny, with a high near 81. Light and variable wind.
Monday Night
Partly cloudy, with a low around 61. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Light west wind.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
10:58 am CDT Jul 3, 2025
Forecast Valid:
12pm CDT Jul 3, 2025-6pm CDT Jul 9, 2025
 
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