West Allis, WI Weather & Growing Conditions

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

Overnight

58°F

Light Rain Likely

Rain likely. Cloudy, with a low around 58. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for West Allis

When	Temp	Forecast	Wind	Precip
Overnight	58°F	Light Rain Likely	10 mph S	72%
Wednesday	63°F	Chance Light Rain	10 to 15 mph S	42%
Wednesday Night	46°F	Cloudy then Slight Chance Light Rain	15 mph SW	22%
Thursday	55°F	Chance Light Rain	10 to 15 mph W	51%
Thursday Night	39°F	Chance Light Rain then Cloudy	10 mph N	47%
Friday	49°F	Slight Chance Light Rain then Mostly Cloudy	10 to 15 mph N	15%
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	1%
Monday	59°F	Sunny	5 to 15 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%

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.