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

74°F

23°C

Humidity 72%
Wind Speed Calm
Barometer 29.81 in (1009.4 mb)
Dewpoint 64°F (18°C)
Visibility 9.00 mi
Last update 18 Jun 10:55 am CDT
Extended Forecast for

Sparta WI

  • Today

    Today: Showers likely and possibly a thunderstorm before 3pm, then scattered showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 78. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers
    Likely then
    Scattered
    Showers

  • Juneteenth

    Juneteenth: Partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming west 5 to 9 mph in the morning.

    High: 85 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 63. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87. South wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 87 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 10 mph, with gusts as high as 25 mph.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 94. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind around 10 mph, with gusts as high as 24 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy, with a south wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 3pm, then scattered showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 78. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming west 5 to 9 mph in the morning.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 63. Southwest wind 5 to 7 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87. South wind 5 to 11 mph, with gusts as high as 21 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 10 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 94. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 76. South wind around 10 mph, with gusts as high as 24 mph.
Sunday
Sunny and hot, with a high near 95. Breezy, with a south wind 10 to 17 mph, with gusts as high as 26 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 74. South wind 8 to 11 mph, with gusts as high as 25 mph.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Southwest wind 3 to 7 mph. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Northwest wind 3 to 7 mph. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.95°N 90.81°W
Last Update:
11:43 am CDT Jun 18, 2025
Forecast Valid:
11am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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