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

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

91°F

33°C

Humidity 54%
Wind Speed Calm
Barometer 30.14 in (1020.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 13 Jul 5:55 pm CDT
Extended Forecast for

Norwalk WI

Heat Advisory July 13, 07:57pm until July 15, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 13, 07:57pm until July 15, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. Heat index values as high as 101. West wind 5 to 9 mph.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66. West wind 3 to 7 mph.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95. Heat index values as high as 100. Northwest wind 3 to 6 mph.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming west around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69. Light south wind.

    Low: 69 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 93. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 65. West wind 3 to 6 mph.
Tuesday
Sunny and hot, with a high near 95. Heat index values as high as 101. West wind 5 to 9 mph.
Tuesday Night
Clear, with a low around 66. West wind 3 to 7 mph.
Wednesday
Sunny and hot, with a high near 95. Heat index values as high as 100. Northwest wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 67. Calm wind.
Thursday
Sunny, with a high near 94. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 69. Light south wind.
Friday
Mostly sunny, with a high near 93. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 68. Southwest wind 5 to 8 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 86. Calm wind becoming southeast around 6 mph in the morning.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 61. Southeast wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82. Southwest wind 3 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Norwalk WI
 43.84°N 90.64°W
Last Update:
6:21 pm CDT Jul 13, 2026
Forecast Valid:
7pm CDT Jul 13, 2026-6pm CDT Jul 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation