West Allis, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for West Allis, a city in Milwaukee County, Wisconsin.

Tonight

58°F

Light Rain

Rain. Cloudy, with a low around 58. South wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for West Allis

When	Temp	Forecast	Wind	Precip
Tonight	58°F	Light Rain	10 mph S	81%
Wednesday	62°F	Chance Light Rain then Cloudy	10 to 15 mph S	48%
Wednesday Night	47°F	Cloudy	15 mph SW	11%
Thursday	54°F	Cloudy then Light Rain Likely	10 to 15 mph W	62%
Thursday Night	40°F	Light Rain Likely	5 to 10 mph NW	55%
Friday	50°F	Chance Light Rain	10 to 15 mph N	27%
Friday Night	35°F	Mostly Cloudy	5 to 10 mph N	9%
Saturday	52°F	Mostly Sunny	5 mph W	3%
Saturday Night	35°F	Partly Cloudy	5 mph W	7%
Sunday	57°F	Mostly Sunny then Slight Chance Light Rain	5 to 10 mph W	18%
Sunday Night	36°F	Partly Cloudy	5 to 10 mph W	6%
Monday	59°F	Mostly Sunny	5 to 15 mph W	3%
Monday Night	41°F	Partly Cloudy	10 mph W	2%
Tuesday	59°F	Sunny	5 to 10 mph W	0%

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

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

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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 Nov 4, 2026.