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

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

A Few Clouds

59°F

15°C

Humidity 44%
Wind Speed Calm
Barometer 30.28 in (1025.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 20 May 11:55 am CDT
Extended Forecast for

Warrens WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 63. Calm wind becoming north around 5 mph.

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. Calm wind becoming southeast around 5 mph after midnight.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 62. East wind 6 to 8 mph.

    High: 62 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. East wind 5 to 7 mph.

    Low: 41 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 64. East wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Cloudy, with a low around 45. East wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly cloudy, with a high near 69. East wind around 6 mph becoming south in the afternoon.

    High: 69 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Light south wind.

    Low: 48 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the morning.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 63. Calm wind becoming north around 5 mph.
Tonight
Mostly cloudy, with a low around 39. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Mostly cloudy, with a high near 62. East wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 41. East wind 5 to 7 mph.
Friday
Mostly cloudy, with a high near 64. East wind 7 to 14 mph, with gusts as high as 25 mph.
Friday Night
Showers likely, mainly after 1am. Cloudy, with a low around 45. East wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of showers. Mostly cloudy, with a high near 69. East wind around 6 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Light south wind.
Sunday
Mostly sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the morning.
Sunday Night
Mostly clear, with a low around 50. Calm wind.
Memorial Day
Sunny, with a high near 85. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 55. Light south wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming southeast 5 to 7 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Warrens WI
 44.14°N 90.51°W
Last Update:
11:41 am CDT May 20, 2026
Forecast Valid:
12pm CDT May 20, 2026-6pm CDT May 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation