Hazardous Weather Conditions
Current conditions at
Sparta, Sparta / Fort McCoy Airport (KCMY)
Lat: 43.96°NLon: 90.74°WElev: 837ft.
Fair
94°F
34°C
| Humidity | 61% |
| Wind Speed | S 13 G 18 mph |
| Barometer | 29.73 in (1006.3 mb) |
| Dewpoint | 78°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 111°F (44°C) |
| Last update | 29 Jun 2:55 pm CDT |
Extended Forecast for
5 Miles WSW Ontario WI
Extreme Heat Warning June 29, 03:41pm until July 1, 07:00pm
NOW until 7:00pm Wed
Extreme Heat Warning
Tonight
Low: 76 °F
Mostly Clear
and Breezy
then Slight
Chance
T-stormsTuesday
High: 93 °F
Mostly Sunny
Tuesday Night
Low: 72 °F
Showers
LikelyWednesday
High: 91 °F
Chance
ShowersWednesday Night
Low: 71 °F
Showers
Thursday
High: 90 °F
Chance
T-stormsThursday Night
Low: 69 °F
Showers
Friday
High: 87 °F
Chance
T-storms
Detailed Forecast
Tonight
A slight chance of showers and thunderstorms between 1am and 3am. Partly cloudy, with a low around 76. Breezy, with a south wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 93. Heat index values as high as 102. South wind 9 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Showers and thunderstorms likely, mainly before 9pm, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 91. Heat index values as high as 96. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 71. Southwest wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm. Low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Southwest wind 5 to 7 mph.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.
Independence Day
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. West wind around 6 mph becoming northwest in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Northwest wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 83. Calm wind becoming northwest around 6 mph in the morning.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles WSW Ontario WI
43.69°N 90.68°W
43.69°N 90.68°W
1:26 pm CDT Jun 29, 2026
3pm CDT Jun 29, 2026-6pm CDT Jul 6, 2026
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