| National Weather Service Forecast for:
Sun Prairie, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: 10/15/2026 2:32pm | ||||||||||||||||||||||||||||||||||||||||
| Sun Prairie WI | ||||||||||||||||||||||||||||||||||||||||
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Freeze Watch issued October 15 at 1:58PM CDT until October 17 at 9:00AM CDT
Freeze Watch issued October 15 at 1:17PM CDT until October 17 at 9:00AM CDT
| This Afternoon |
Rain showers. Cloudy, with a high near 55. East wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible. |
| Tonight |
Rain showers before 1am. Cloudy, with a low around 45. North wind 0 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible. |
| Friday |
Rain showers likely between 8am and 3pm. Mostly cloudy, with a high near 51. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible. |
| Friday Night |
Widespread frost after 1am. Mostly clear, with a low around 29. Northwest wind 0 to 20 mph, with gusts as high as 30 mph. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
Widespread frost before 9am. Sunny, with a high near 56. West wind 0 to 10 mph. |
| Saturday Night |
Clear, with a low around 38. Southwest wind 10 to 15 mph. |
| Sunday |
Sunny, with a high near 63. Southwest wind around 15 mph, with gusts as high as 25 mph. |
| Sunday Night |
Mostly clear, with a low around 41. Southwest wind 5 to 15 mph. |
| Monday |
Mostly sunny, with a high near 66. |
| Monday Night |
Partly cloudy, with a low around 41. |
| Tuesday |
Mostly sunny, with a high near 69. |
| Tuesday Night |
Mostly clear, with a low around 44. |
| Wednesday |
Sunny, with a high near 70. |
| Wednesday Night |
Mostly clear, with a low around 49. |
Forecast from NOAA-NWS for Sun Prairie, WI.