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

Severe Weather Likely this Afternoon

An additional round of severe weather will move into the region early this afternoon and depart before sunset. Large hail (2-3" diameter), damaging wind gusts and a few tornadoes, perhaps some strong (EF2-EF3) will be possible. Be sure to have multiple ways to receive warnings and to promptly head to your safe location when a warning is issued! Read More >

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

79°F

26°C

Humidity 52%
Wind Speed SE 16 G 25 mph
Barometer 29.62 in (1003.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Apr 11:55 am CDT
Extended Forecast for

4 Miles NW Melvina WI

Flood Watch April 17, 01:00pm until April 18, 07:00am
Tornado Watch until April 17, 08:00pm
Click here for hazard details and duration
Flood Watch
Tornado Watch
  •  
    Tornado Watch until April 17, 08:00pm

    NOW until 8:00pm Fri

    Tornado Watch

  • This Afternoon

    High: 78 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could be severe. Low around 33. Breezy, with a northwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 33 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 46. Breezy, with a west wind 15 to 18 mph, with gusts as high as 29 mph.

    High: 46 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. West wind 6 to 14 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 50. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 26. Northwest wind around 6 mph becoming calm in the evening.

    Low: 26 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 58. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 46. South wind around 10 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. Some of the storms could be severe. High near 78. Breezy, with a south wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could be severe. Low around 33. Breezy, with a northwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 46. Breezy, with a west wind 15 to 18 mph, with gusts as high as 29 mph.
Saturday Night
Mostly clear, with a low around 28. West wind 6 to 14 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 50. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 26. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 58. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 46. South wind around 10 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 73. South wind around 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Clear, with a low around 43. West wind around 5 mph becoming east after midnight.
Wednesday
Sunny, with a high near 73. Southeast wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 51. Southeast wind around 8 mph, with gusts as high as 18 mph.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 77. South wind 8 to 14 mph, with gusts as high as 23 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Melvina WI
 43.84°N 90.85°W
Last Update:
12:47 pm CDT Apr 17, 2026
Forecast Valid:
12pm CDT Apr 17, 2026-6pm CDT Apr 23, 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