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.

Fog/Mist

50°F

10°C

Humidity 98%
Wind Speed Calm
Barometer 29.98 in (1015.6 mb)
Dewpoint 49°F (9°C)
Visibility 4.00 mi
Last update 14 Oct 12:55 am CDT
Extended Forecast for

Sparta WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 62. Light north wind.

    High: 62 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, mainly after 10am. High near 56. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers likely before 1am. Mostly cloudy, with a low around 38. Breezy, with a light northwest wind increasing to 12 to 17 mph in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 55. Breezy, with a north wind 16 to 20 mph, with gusts as high as 33 mph.

    High: 55 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 3am. Otherwise, clear, with a low around 29. Light north wind.

    Low: 29 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 61. Light and variable wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 61 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36. Southwest wind 5 to 7 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Partly sunny, with a high near 62. Light north wind.
Wednesday Night
Mostly cloudy, with a low around 43. Calm wind.
Thursday
Showers, mainly after 10am. High near 56. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely before 1am. Mostly cloudy, with a low around 38. Breezy, with a light northwest wind increasing to 12 to 17 mph in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Partly sunny, with a high near 55. Breezy, with a north wind 16 to 20 mph, with gusts as high as 33 mph.
Friday Night
Widespread frost, mainly after 3am. Otherwise, clear, with a low around 29. Light north wind.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 61. Light and variable wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Saturday Night
Clear, with a low around 36. Southwest wind 5 to 7 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 66. Southwest wind 7 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 43. South wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 23 mph.
Monday
Mostly sunny, with a high near 68. Calm wind.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.95°N 90.78°W
Last Update:
1:26 am CDT Oct 14, 2026
Forecast Valid:
1am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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