Hazardous Weather Conditions
Current conditions at
Sparta, Sparta / Fort McCoy Airport (KCMY)
Lat: 43.96°NLon: 90.74°WElev: 837ft.
Thunderstorm in Vicinity
53°F
12°C
| Humidity | 88% |
| Wind Speed | Calm |
| Barometer | 29.84 in (1010.5 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Last update | 17 May 12:55 am CDT |
Extended Forecast for
2 Miles ESE Ontario WI
Overnight
Low: 54 °F
Chance
T-stormsSunday
High: 73 °F
Showers
Sunday Night
Low: 64 °F
Chance
T-storms then
Showers
LikelyMonday
High: 81 °F
Showers
Monday Night
Low: 59 °F
Showers
Tuesday
High: 69 °F
Chance
ShowersTuesday Night
Low: 42 °F
Mostly Cloudy
Wednesday
High: 61 °F
Mostly Sunny
Wednesday Night
Low: 39 °F
Partly Cloudy
Detailed Forecast
Overnight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 54. Calm wind becoming east around 5 mph.
Sunday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. High near 73. East wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. East wind 9 to 11 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers, with thunderstorms also possible after 10am. High near 81. 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.
Monday Night
Showers and possibly a thunderstorm. Low around 59. South wind 7 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly cloudy, with a high near 69. Southwest wind around 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly cloudy, with a low around 42. Northwest wind 6 to 13 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 61. Northwest wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 39. Light north wind.
Thursday
Mostly sunny, with a high near 66. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 42. Light southeast wind.
Friday
Mostly sunny, with a high near 70. Southeast wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around 47. Light east wind.
Saturday
Mostly sunny, with a high near 75. East wind 3 to 8 mph. Winds could gust as high as 18 mph.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles ESE Ontario WI
43.71°N 90.56°W
43.71°N 90.56°W
12:46 am CDT May 17, 2026
1am CDT May 17, 2026-6pm CDT May 23, 2026
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