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

64°F

18°C

Humidity 97%
Wind Speed Calm
Barometer 29.95 in (1014.1 mb)
Dewpoint 64°F (18°C)
Visibility 9.00 mi
Last update 29 Jul 12:55 am CDT
Extended Forecast for

2 Miles SE Ontario WI

  • Overnight

    Overnight: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy smoke before 2am, then patchy smoke after 5am. Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Patchy Smoke

  • Thursday

    Thursday: Patchy smoke before 7am. Mostly sunny, with a high near 86. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 86 °F

    Patchy Smoke
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Light south wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 10am. High near 74. East wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 74 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Saturday

    Saturday: A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 80. Northeast wind 6 to 8 mph, with gusts as high as 20 mph.

    High: 80 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. Light northeast wind.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 62. Calm wind.
Wednesday
Sunny, with a high near 85. Calm wind.
Wednesday Night
Patchy smoke before 2am, then patchy smoke after 5am. Mostly clear, with a low around 64. Calm wind.
Thursday
Patchy smoke before 7am. Mostly sunny, with a high near 86. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Light south wind. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, with thunderstorms also possible after 10am. High near 74. East wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 80. Northeast wind 6 to 8 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 59. Light northeast wind.
Sunday
Sunny, with a high near 80. Light northeast wind.
Sunday Night
Mostly clear, with a low around 58. Calm wind.
Monday
Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 62. Calm wind.
Tuesday
Mostly sunny, with a high near 85. Light and variable wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Ontario WI
 43.71°N 90.56°W
Last Update:
1:26 am CDT Jul 29, 2026
Forecast Valid:
1am CDT Jul 29, 2026-6pm CDT Aug 4, 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