| National Weather Service Forecast for:
Sun Prairie, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: 05/09/2026 10:33pm | ||||||||||||||||||||||||||||||||||||||||
| Sun Prairie WI | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Clear, with a low around 38. Northwest wind around 5 mph. |
| Sunday |
A chance of rain showers after 2pm. Mostly sunny, with a high near 58. Northwest wind 5 to 15 mph. |
| Sunday Night |
A chance of rain showers before 7pm, then areas of frost. Mostly clear, with a low around 35. North wind 5 to 10 mph. |
| Monday |
Areas of frost before 7am. Sunny, with a high near 60. Northeast wind 0 to 5 mph. |
| Monday Night |
A chance of rain showers after 1am. Partly cloudy, with a low around 40. Southeast wind 0 to 10 mph. Chance of precipitation is 30%. |
| Tuesday |
A chance of rain showers before 7am, then showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 73. Southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday Night |
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 46. West wind 10 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday |
Mostly sunny, with a high near 62. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. |
| Wednesday Night |
Partly cloudy, with a low around 40. |
| Thursday |
Sunny, with a high near 69. |
| Thursday Night |
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 48. Chance of precipitation is 40%. |
| Friday |
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 40%. |
| Friday Night |
A slight chance of rain showers before 1am. Partly cloudy, with a low around 54. Chance of precipitation is 20%. |
| Saturday |
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Sun Prairie, WI.