
Dangerous Heat Possible Next Week
A turn to hot and humid conditions is expected starting Monday. Dangerously hot conditions are possible through next week, particularly on Monday. Read More >
Hazardous Weather Conditions
Current conditions at
Sparta, Sparta / Fort McCoy Airport (KCMY)
Lat: 43.96°NLon: 90.74°WElev: 837ft.
Fair
66°F
19°C
| Humidity | 78% |
| Wind Speed | Calm |
| Barometer | 29.92 in (1013.1 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 27 Jun 11:55 pm CDT |
Extended Forecast for
Cataract WI
Extreme Heat Warning June 29, 08:00am until June 30, 08:00am
Overnight

Low: 59 °F
Mostly Clear
Sunday
High: 84 °F
Partly Sunny
then Slight
Chance
T-storms and
BreezySunday Night

Low: 72 °F
Chance
T-stormsMonday
High: 95 °F
Mostly Sunny
then Sunny
and BreezyMonday Night
Low: 75 °F
Mostly Clear
then Chance
T-stormsTuesday

High: 95 °F
Slight Chance
T-stormsTuesday Night

Low: 71 °F
Chance
T-stormsWednesday

High: 92 °F
Showers
LikelyWednesday Night

Low: 69 °F
T-storms
Likely
Detailed Forecast
Overnight
Mostly clear, with a low around 59. Southeast wind 3 to 6 mph.
Sunday
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 3pm. Partly sunny, with a high near 84. Breezy, with a southeast wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 72. Southeast wind 6 to 11 mph, with gusts as high as 23 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Partly sunny, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 106. Breezy, with a south wind 7 to 17 mph, with gusts as high as 26 mph.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South wind 8 to 15 mph, with gusts as high as 28 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 95. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southwest wind 5 to 10 mph, with gusts as high as 22 mph.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Southwest wind 5 to 9 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. South wind 5 to 7 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Southwest wind 6 to 8 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light south wind.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southwest 5 to 7 mph in the morning.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light and variable wind.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south 5 to 7 mph in the afternoon.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Cataract WI
44.1°N 90.84°W
44.1°N 90.84°W
12:35 am CDT Jun 28, 2026
12am CDT Jun 28, 2026-6pm CDT Jul 4, 2026



