National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat Possible Next Week

A turn 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.

Mostly Cloudy

49°F

9°C

Humidity 97%
Wind Speed Calm
Barometer 30.03 in (1017.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 27 Jun 4:55 am CDT
Extended Forecast for

4 Miles SW Norwalk WI

Extreme Heat Watch June 29, 12:00pm until June 30, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Today

    Today: Sunny, with a high near 81. Southeast wind 7 to 10 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Southeast wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms between 10am and 11am. Increasing clouds, with a high near 85. Breezy, with a southeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers then
    Mostly Cloudy
    and Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 73. Breezy, with a southeast wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 73 °F

    Slight Chance
    T-storms and
    Breezy

  • Monday

    Monday: Sunny, with a high near 93. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 93 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. Breezy, with a south wind 13 to 20 mph, with gusts as high as 29 mph.

    Low: 75 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 73 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 91. Southwest wind around 10 mph, with gusts as high as 21 mph.

    High: 91 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 81. Southeast wind 7 to 10 mph.
Tonight
Mostly clear, with a low around 60. Southeast wind 7 to 9 mph, with gusts as high as 20 mph.
Sunday
A chance of showers and thunderstorms between 10am and 11am. Increasing clouds, with a high near 85. Breezy, with a southeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 73. Breezy, with a southeast wind 10 to 16 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 93. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 75. Breezy, with a south wind 13 to 20 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 91. Southwest wind around 10 mph, with gusts as high as 21 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind around 8 mph, with gusts as high as 22 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 91. Southwest wind around 9 mph, with gusts as high as 18 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South wind 3 to 7 mph.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Norwalk WI
 43.8°N 90.7°W
Last Update:
1:26 am CDT Jun 27, 2026
Forecast Valid:
5am CDT Jun 27, 2026-6pm CDT Jul 3, 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