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Brown Deer, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Brown Deer, a village in Milwaukee County, Wisconsin.

Today
66°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Cloudy, with a high near 66. Southeast 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 Brown Deer

WhenTempForecastWindPrecip
Today 66°F Chance Showers And Thunderstorms 10 mph SE 75%
Tonight 60°F Showers And Thunderstorms 5 to 10 mph NE 84%
Sunday 64°F Chance Rain Showers then Cloudy 15 to 20 mph NE 40%
Sunday Night 52°F Mostly Cloudy 10 to 20 mph NE 2%
Monday 63°F Mostly Cloudy 10 to 15 mph NE 5%
Monday Night 50°F Mostly Cloudy 10 to 15 mph NE 4%
Tuesday 63°F Partly Sunny 10 to 15 mph NE 6%
Tuesday Night 51°F Partly Cloudy 5 to 15 mph NE 7%
Wednesday 64°F Mostly Sunny 5 to 15 mph NE 8%
Wednesday Night 51°F Mostly Cloudy 5 to 10 mph NE 4%
Thursday 66°F Mostly Sunny 5 to 10 mph NE 4%
Thursday Night 52°F Partly Cloudy 0 to 5 mph NE 4%
Friday 69°F Mostly Sunny 5 mph NE 5%
Friday Night 53°F Partly Cloudy 0 to 5 mph NE 4%

Forecast source: National Weather Service (api.weather.gov) for Brown Deer (43.174, -87.975). Updated through the day.

Growing snapshot for Brown Deer

Last spring frost
Apr 26
First fall frost
Oct 18
Growing season
173 days
Hardiness zone
6a

More local growing data for Brown Deer: nearby ZIP 53223 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Mt Mary College, Wi (6.5 mi from Brown Deer). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.