| National Weather Service Forecast for:
Sun Prairie, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: 04/11/2026 1:21pm | ||||||||||||||||||||||||||||||||||||||||
| Sun Prairie WI | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
A slight chance of rain showers. Mostly cloudy, with a high near 55. Southeast wind around 10 mph. Chance of precipitation is 20%. |
| Tonight |
A chance of rain showers before 7pm, then showers and thunderstorms between 7pm and 4am, then a chance of showers and thunderstorms. Cloudy. Low around 45, with temperatures rising to around 50 overnight. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible. |
| Sunday |
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and noon, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 71. South wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible. |
| Sunday Night |
Showers and thunderstorms likely before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Cloudy, with a low around 58. Southwest wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday |
Mostly cloudy, with a high near 77. Southwest wind around 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Monday Night |
Showers and thunderstorms likely after 7pm. Mostly cloudy, with a low around 62. Southwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Tuesday |
A chance of rain showers before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 79. Southwest wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Tuesday Night |
Showers and thunderstorms. Mostly cloudy, with a low around 58. Southwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible. |
| Wednesday |
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 72. Chance of precipitation is 50%. |
| Wednesday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 50%. |
| Thursday |
A chance of rain showers. Mostly sunny, with a high near 75. Chance of precipitation is 30%. |
| Thursday Night |
A slight chance of rain showers. Mostly clear, with a low around 54. Chance of precipitation is 20%. |
| Friday |
A chance of rain showers. Mostly sunny, with a high near 75. Chance of precipitation is 50%. |
| Friday Night |
A chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%. |
Forecast from NOAA-NWS for Sun Prairie, WI.