National Weather Service Forecast for: West Allis WI
Issued by: National Weather Service Milwaukee, WI
Updated: 1:38 pm CDT Jun 8, 2025
 
This
Afternoon
This Afternoon: Showers likely and possibly a thunderstorm before 4pm, then a chance of showers. Mostly cloudy, with a steady temperature around 71. West wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Tonight

Tonight: A 30 percent chance of showers, mainly before 7pm. Partly cloudy, with a low around 55. West wind around 5 mph.
Chance
Showers then
Partly Cloudy
 Monday

Monday: A chance of showers before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 69. Southwest wind 5 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.
Slight Chance
Showers then
Showers
Likely
 Monday
Night
Monday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 54. West wind 5 to 10 mph.
Slight Chance
T-storms then
Mostly Clear
 Tuesday

Tuesday: Mostly sunny, with a high near 76. West wind 5 to 10 mph.
Mostly Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 58. Southwest wind around 5 mph.
Mostly 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. Increasing clouds, with a low around 60. Southwest wind 5 to 10 mph. Chance of precipitation is 40%.
Chance
T-storms

 Thursday

Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.
Chance
Showers
Hi 71 °F Lo 55 °F Hi 69 °F Lo 54 °F Hi 76 °F Lo 58 °F Hi 85 °F Lo 60 °F Hi 72 °F

Hazardous Weather Outlook
 

This Afternoon
 
 Showers likely and possibly a thunderstorm before 4pm, then a chance of showers. Mostly cloudy, with a steady temperature around 71. West wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A 30 percent chance of showers, mainly before 7pm. Partly cloudy, with a low around 55. West wind around 5 mph.
Monday
 
 A chance of showers before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 69. Southwest wind 5 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 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 54. West wind 5 to 10 mph.
Tuesday
 
 Mostly sunny, with a high near 76. West wind 5 to 10 mph.
Tuesday Night
 
 Mostly clear, with a low around 58. Southwest wind around 5 mph.
Wednesday
 
 Sunny, with a high near 85. Southwest wind around 10 mph.
Wednesday Night
 
 A chance of showers and thunderstorms. Increasing clouds, with a low around 60. Southwest wind 5 to 10 mph. Chance of precipitation is 40%.
Thursday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.
Thursday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Friday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 70.
Friday Night
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 57.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69.
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. Partly sunny, with a high near 68.

 

Forecast from NOAA-NWS for West Allis WI.