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 >

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
Click here for hazard details and duration
Extreme Heat Warning
  • Overnight

    Overnight: Mostly clear, with a low around 59. Southeast wind 3 to 6 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    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%.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Sunday Night

    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.

    Low: 72 °F

    Chance
    T-storms

  • Monday

    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.

    High: 95 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    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.

    Low: 75 °F

    Mostly Clear
    then Chance
    T-storms

  • Tuesday

    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.

    High: 95 °F

    Slight Chance
    T-storms

  • Tuesday Night

    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.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    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%.

    High: 92 °F

    Showers
    Likely

  • Wednesday Night

    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%.

    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.
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ABOUT THIS FORECAST

 
Point Forecast:
Cataract WI
 44.1°N 90.84°W
12:35 am CDT Jun 28, 2026
12am CDT Jun 28, 2026-6pm CDT Jul 4, 2026
 
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