West Allis, WI Weather & Growing Conditions
Today
64°F
Scattered Rain Showers
Scattered rain showers before 5pm. Cloudy. High near 64, with temperatures falling to around 55 in the afternoon. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Scattered Rain Showers | 10 to 15 mph SW | 26% |
| Tonight | 46°F | Cloudy then Slight Chance Rain Showers | 10 mph SW | 22% |
| Thursday | 56°F | Chance Rain Showers then Chance Light Rain | 10 to 15 mph W | 51% |
| Thursday Night | 38°F | Chance Light Rain then Cloudy | 10 mph N | 48% |
| Friday | 49°F | Slight Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 17% |
| Friday Night | 33°F | Partly Cloudy | 5 to 10 mph N | 2% |
| Saturday | 50°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 2% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 7% |
| Sunday Night | 36°F | Mostly Clear | 5 to 10 mph W | 2% |
| Monday | 59°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 41°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 to 10 mph NW | 2% |
| Tuesday Night | 39°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for West Allis, WI
Last spring frost
Apr 26
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
5b
Explore more for West Allis, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, West Allis, Wi (0.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.