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.

Fog/Mist

59°F

15°C

Humidity 98%
Wind Speed Calm
Barometer 29.97 in (1014.9 mb)
Dewpoint 59°F (15°C)
Visibility 5.00 mi
Last update 8 Aug 2:55 am CDT
Extended Forecast for

Cataract WI

  • Overnight

    Overnight: Mostly clear, with a low around 55. Light northwest wind.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. Light south wind.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, with a high near 83. Light and variable wind becoming southwest around 6 mph in the morning. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 50%.

    Low: 62 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 55. Light northwest wind.
Saturday
Sunny, with a high near 82. Calm wind becoming west 5 to 7 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. Light south wind.
Sunday
A 50 percent chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, with a high near 83. Light and variable wind becoming southwest around 6 mph in the morning. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 85. Calm wind.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 50%.
Tuesday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. Calm wind.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 60. Calm wind.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. Calm wind.
Thursday
Partly sunny, with a high near 80. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 54. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cataract WI
 44.1°N 90.81°W
Last Update:
1:26 am CDT Aug 8, 2026
Forecast Valid:
3am CDT Aug 8, 2026-6pm CDT Aug 14, 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