| National Weather Service Forecast for:
Sun Prairie, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: 09/24/2026 2:31pm | ||||||||||||||||||||||||||||||||||||||||
| Sun Prairie WI | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
Mostly cloudy, with a high near 68. East wind around 5 mph. |
| Tonight |
A chance of rain showers between midnight and 4am. Mostly cloudy, with a low around 55. Southeast wind 0 to 5 mph. Chance of precipitation is 30%. |
| Friday |
Mostly cloudy, with a high near 68. East wind 0 to 5 mph. |
| Friday Night |
Partly cloudy, with a low around 48. East wind 0 to 5 mph. |
| Saturday |
Mostly sunny, with a high near 68. Southeast wind 0 to 5 mph. |
| Saturday Night |
Mostly cloudy, with a low around 50. East wind 0 to 5 mph. |
| Sunday |
Partly sunny, with a high near 67. Southeast wind around 0 mph. |
| Sunday Night |
Partly cloudy, with a low around 50. Northeast wind around 0 mph. |
| Monday |
Mostly sunny, with a high near 70. |
| Monday Night |
Partly cloudy, with a low around 54. |
| Tuesday |
A chance of rain showers after 7am. Partly sunny, with a high near 69. Chance of precipitation is 40%. |
| Tuesday Night |
Rain showers likely. Mostly cloudy, with a low around 59. Chance of precipitation is 70%. |
| Wednesday |
Rain showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%. |
| Wednesday Night |
A chance of rain showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%. |
Forecast from NOAA-NWS for Sun Prairie, WI.