| National Weather Service Forecast for:
Sun Prairie, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: 07/03/2026 11:52am | ||||||||||||||||||||||||||||||||||||||||
| Sun Prairie WI | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
A chance of showers and thunderstorms. Partly sunny. High near 87, with temperatures falling to around 82 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Tonight |
A chance of showers and thunderstorms before 1am, then patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Independence Day |
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 83. Southwest wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. |
| Saturday Night |
Showers and thunderstorms before 9pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. North wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Sunday |
A chance of rain showers. Partly sunny, with a high near 80. Northwest wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Sunday Night |
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 61. Northwest wind 5 to 10 mph. Chance of precipitation is 30%. |
| Monday |
Mostly sunny, with a high near 81. North wind around 5 mph. |
| Monday Night |
Partly cloudy, with a low around 61. North wind 0 to 5 mph. |
| Tuesday |
Mostly sunny, with a high near 85. |
| Tuesday Night |
Mostly clear, with a low around 64. |
| Wednesday |
Mostly sunny, with a high near 86. |
| Wednesday Night |
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 30%. |
| Thursday |
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%. |
| Thursday Night |
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 40%. |
Forecast from NOAA-NWS for Sun Prairie, WI.