West Allis, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Allis, a city in Milwaukee County, Wisconsin.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. Southwest wind 5 to 10 mph.
7-day forecast for West Allis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SW | 4% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 82% |
| Wednesday | 75°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph NW | 77% |
| Wednesday Night | 62°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 48% |
| Thursday | 78°F | Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 25% |
| Thursday Night | 60°F | Partly Cloudy | 0 to 5 mph S | 11% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Friday Night | 64°F | Mostly Clear | 5 mph SW | 6% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 15% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 27% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 27% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 51% |
| Monday | 83°F | Chance Rain Showers | 5 to 10 mph S | 45% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 mph NW | 43% |
Forecast source: National Weather Service (api.weather.gov) for West Allis (43.007, -88.029). Updated through the day.
Growing snapshot for West Allis
Last spring frost
Apr 26
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
5b
More local growing data for West Allis: nearby ZIP 53227 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Bayside
Brown Deer
Cudahy
Fox Point
Franklin
Glendale
Greendale
Greenfield
Hales Corners
Milwaukee
Oak Creek
River Hills
Shorewood
South Milwaukee
St. Francis
Wauwatosa
West Milwaukee
Whitefish Bay
Climate data from the nearest NOAA station, West Allis, Wi (2.5 mi from West Allis). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.