National Weather Service Forecast for: West Allis WI
Issued by: National Weather Service Milwaukee, WI
Updated: 3:26 pm CDT Jul 28, 2026
 
Tonight

Tonight: Mostly clear, with a low around 61. Northeast wind 5 to 10 mph becoming light north in the evening.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 82. Calm wind becoming northeast around 5 mph in the morning.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 64. South wind around 5 mph becoming calm.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Mostly Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 67. South wind around 5 mph.
Mostly Cloudy
 Friday

Friday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 83. Southwest wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 40%.
Chance
Showers
 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely
 Saturday

Saturday: A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 78. Northeast wind around 10 mph.
Chance
Showers
 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 65.
Mostly Cloudy
Lo 61 °F Hi 82 °F Lo 64 °F Hi 88 °F Lo 67 °F Hi 83 °F Lo 67 °F Hi 78 °F Lo 65 °F

Hazardous Weather Outlook
Beach Hazards Statement
 

Tonight
 
 Mostly clear, with a low around 61. Northeast wind 5 to 10 mph becoming light north in the evening.
Wednesday
 
 Sunny, with a high near 82. Calm wind becoming northeast around 5 mph in the morning.
Wednesday Night
 
 Mostly clear, with a low around 64. South wind around 5 mph becoming calm.
Thursday
 
 Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
 
 Mostly cloudy, with a low around 67. South wind around 5 mph.
Friday
 
 A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 83. Southwest wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 40%.
Friday Night
 
 Showers likely and possibly a thunderstorm. Cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
 
 A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 78. Northeast wind around 10 mph.
Saturday Night
 
 Mostly cloudy, with a low around 65.
Sunday
 
 Mostly sunny, with a high near 78.
Sunday Night
 
 Mostly clear, with a low around 63.
Monday
 
 Sunny, with a high near 81.
Monday Night
 
 Mostly clear, with a low around 65.
Tuesday
 
 Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for West Allis WI.