National Weather Service Forecast for: Waukesha WI
Issued by: National Weather Service Milwaukee, WI
Updated: 8:38 pm CDT Jun 9, 2025
 
Tonight

Tonight: Mostly clear, with a low around 51. West wind around 5 mph.
Mostly Clear

 Tuesday

Tuesday: Increasing clouds, with a high near 75. West wind 5 to 15 mph, with gusts as high as 25 mph.
Increasing
Clouds

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 61. Southwest wind 5 to 10 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 84. West 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 59. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
 Thursday

Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69. East wind 5 to 10 mph.
Chance
T-storms

 Thursday
Night
Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph.
Chance
T-storms

 Friday

Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 67. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Showers
Likely
Lo 51 °F Hi 75 °F Lo 61 °F Hi 84 °F Lo 59 °F Hi 69 °F Lo 54 °F Hi 67 °F Lo 55 °F

 

Tonight
 
 Mostly clear, with a low around 51. West wind around 5 mph.
Tuesday
 
 Increasing clouds, with a high near 75. West wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
 
 Mostly clear, with a low around 61. Southwest wind 5 to 10 mph.
Wednesday
 
 Sunny, with a high near 84. West 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 59. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69. East wind 5 to 10 mph.
Thursday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph.
Friday
 
 Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 67. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 72.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
Sunday Night
 
 A 20 percent chance of showers. Mostly cloudy, with a low around 56.
Monday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.

 

Forecast from NOAA-NWS for Waukesha WI.