National Weather Service Forecast for: Sun Prairie WI
Issued by: National Weather Service Milwaukee, WI
Updated: 11:38 pm CDT Jun 8, 2025
 
Overnight

Overnight: Partly cloudy, with a low around 54. Southwest wind around 5 mph.
Partly Cloudy

 Monday

Monday: A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 64. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
 Monday
Night
Monday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 52. West wind 5 to 10 mph.
Chance
Showers then
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 75. West wind around 10 mph.
Sunny

 Tuesday
Night
Tuesday Night: Clear, with a low around 57. Southwest wind 5 to 10 mph.
Clear

 Wednesday

Wednesday: Sunny, with a high near 85. Southwest wind around 10 mph.
Sunny

 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
Showers
Likely
 Thursday

Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. East wind 5 to 10 mph. Chance of precipitation is 50%.
Chance
Showers

 Thursday
Night
Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Chance
T-storms then
Showers
Likely
Lo 54 °F Hi 64 °F Lo 52 °F Hi 75 °F Lo 57 °F Hi 85 °F Lo 62 °F Hi 76 °F Lo 56 °F

 

Overnight
 
 Partly cloudy, with a low around 54. Southwest wind around 5 mph.
Monday
 
 A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 64. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
 
 A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 52. West wind 5 to 10 mph.
Tuesday
 
 Sunny, with a high near 75. West wind around 10 mph.
Tuesday Night
 
 Clear, with a low around 57. Southwest wind 5 to 10 mph.
Wednesday
 
 Sunny, with a high near 85. Southwest wind around 10 mph.
Wednesday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. East wind 5 to 10 mph. Chance of precipitation is 50%.
Thursday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
 
 A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 73. Chance of precipitation is 50%.
Friday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.

 

Forecast from NOAA-NWS for Sun Prairie WI.