| National Weather Service Forecast for:
Sun Prairie, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: 08/08/2026 9:46pm | ||||||||||||||||||||||||||||||||||||||||
| Sun Prairie WI | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Mostly clear, with a low around 61. South wind 0 to 5 mph. |
| Sunday |
A chance of showers and thunderstorms between 7am and 9am, then showers and thunderstorms likely between 9am and 11am, then a chance of showers and thunderstorms between 11am and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. |
| Sunday Night |
A chance of showers and thunderstorms before 3am, then a chance of rain showers and patchy fog. Mostly cloudy, with a low around 65. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday |
Patchy fog before 7am, then a chance of rain showers and patchy fog between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Monday Night |
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday |
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday Night |
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. East wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday |
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 30%. |
| Thursday |
A slight chance of rain showers before 7am. Partly sunny, with a high near 76. Chance of precipitation is 20%. |
| Thursday Night |
Partly cloudy, with a low around 57. |
| Friday |
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73. Chance of precipitation is 20%. |
| Friday Night |
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%. |
| Saturday |
A chance of rain showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 72. Chance of precipitation is 30%. |
Forecast from NOAA-NWS for Sun Prairie, WI.