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

46°F

8°C

Humidity 98%
Wind Speed Calm
Barometer 30.18 in (1022.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 4 Oct 7:55 am CDT
Extended Forecast for

Sparta WI

Frost Advisory October 5, 01:00am until October 5, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Today

    Today: Sunny, with a high near 66. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Patchy frost after 5am. Otherwise, clear, with a low around 36. Light west wind.

    Low: 36 °F

    Clear then
    Patchy Frost

  • Monday

    Monday: Patchy frost before 8am. Otherwise, sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Light south wind.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. South wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. Southwest wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 68. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 66. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tonight
Patchy frost after 5am. Otherwise, clear, with a low around 36. Light west wind.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 66. Light and variable wind.
Monday Night
Mostly clear, with a low around 47. Light south wind.
Tuesday
Sunny, with a high near 72. South wind 7 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 50. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 70. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 45. Calm wind.
Thursday
Mostly sunny, with a high near 68. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. Calm wind.
Friday
Mostly sunny, with a high near 68. Calm wind.
Friday Night
Partly cloudy, with a low around 48. Light and variable wind.
Saturday
Sunny, with a high near 72. Southeast wind 5 to 15 mph, with gusts as high as 26 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
8:01 am CDT Oct 4, 2026
Forecast Valid:
9am CDT Oct 4, 2026-6pm CDT Oct 10, 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