Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Mostly Cloudy

68°F

20°C

Humidity 95%
Wind Speed Calm
Barometer 29.95 in (1014.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 7 Aug 10:55 pm CDT
Extended Forecast for

4 Miles SSE Westby WI

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Calm wind becoming northwest around 6 mph after midnight.

    Low: 60 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 82. Northwest wind 3 to 6 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 5am.  Partly cloudy, with a low around 62. Light south wind.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely before 2pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly cloudy, with a high near 82. South wind 5 to 8 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 65. Light and variable wind.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers after 1am.  Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 82. Calm wind.  Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Calm wind becoming northwest around 6 mph after midnight.
Saturday
Sunny, with a high near 82. Northwest wind 3 to 6 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 62. Light south wind.
Sunday
Showers and thunderstorms likely before 2pm, then a slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 82. South wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers after 1am. Partly cloudy, with a low around 63. Calm wind.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Calm wind. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 61. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Calm wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. Light and variable wind.
Thursday
Mostly sunny, with a high near 78. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 56. Light and variable wind.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Westby WI
 43.61°N 90.8°W
11:16 pm CDT Aug 7, 2026
11pm CDT Aug 7, 2026-6pm CDT Aug 14, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database