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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 43.17°N 89.21°W (Text-Only)
NWS Forecast for: Sun Prairie WI
Issued by: National Weather Service Milwaukee, WI
Last Update: 12:36 am CST Dec 5, 2025		Print

  • Overnight

    Overnight: Mostly cloudy, with a low around 3. Wind chill values between -5 and -10. Southwest wind 10 to 15 mph.

    Low: 3 °F

    Mostly Cloudy



  • Friday

    Friday: A slight chance of snow and freezing rain after 2pm. Mostly cloudy, with a high near 26. Wind chill values between -5 and 5. Southwest wind around 10 mph. Chance of precipitation is 20%.

    High: 26 °F

    Mostly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Friday
    Night

    Friday Night: A chance of snow and freezing rain before midnight. Mostly cloudy, with a low around 17. Southwest wind around 10 mph becoming northwest after midnight. Chance of precipitation is 40%.

    Low: 17 °F

    Chance Wintry
    Mix then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 23. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 23 °F

    Partly Sunny



  • Saturday
    Night

    Saturday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 9. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 9 °F

    Chance Snow
    then Snow
    Likely

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Partly sunny, with a high near 18. North wind 5 to 10 mph.

    High: 18 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around -6. North wind around 5 mph becoming calm in the evening.

    Low: -6 °F

    Partly Cloudy



  • Monday

    Monday: A 20 percent chance of snow after noon. Partly sunny, with a high near 20. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 20 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Monday
    Night

    Monday Night: Snow. Temperature falling to near 15 by 8pm, then rising to around 22 during the remainder of the night. Chance of precipitation is 80%.

    Low: 15 °F⇑

    Snow





    • Overnight: Mostly cloudy, with a low around 3. Wind chill values between -5 and -10. Southwest wind 10 to 15 mph.

    Friday: A slight chance of snow and freezing rain after 2pm. Mostly cloudy, with a high near 26. Wind chill values between -5 and 5. Southwest wind around 10 mph. Chance of precipitation is 20%.

    Friday Night: A chance of snow and freezing rain before midnight. Mostly cloudy, with a low around 17. Southwest wind around 10 mph becoming northwest after midnight. Chance of precipitation is 40%.

    Saturday: Partly sunny, with a high near 23. Northwest wind around 5 mph becoming calm in the afternoon.

    Saturday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 9. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Sunday: A 20 percent chance of snow before noon. Partly sunny, with a high near 18. North wind 5 to 10 mph.

    Sunday Night: Partly cloudy, with a low around -6. North wind around 5 mph becoming calm in the evening.

    Monday: A 20 percent chance of snow after noon. Partly sunny, with a high near 20. Light and variable wind becoming south 5 to 10 mph in the morning.

    Monday Night: Snow. Temperature falling to near 15 by 8pm, then rising to around 22 during the remainder of the night. Chance of precipitation is 80%.

    Tuesday: A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 29.

    Tuesday Night: Snow likely. Mostly cloudy, with a low around 17. Chance of precipitation is 70%.

    Wednesday: Snow likely. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.

    Wednesday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 6.

    Thursday: A 30 percent chance of snow. Partly sunny, with a high near 20.


    Sun Prairie WI
     43.17°N 89.21°W (Elev. 948 ft)

    Visit your local NWS office at: https://www.weather.gov/mkx