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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.

Tonight
59°F
Showers And Thunderstorms
Rain showers likely before 1am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 59. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

7-day forecast for Brown Deer

WhenTempForecastWindPrecip
Tonight 59°F Showers And Thunderstorms 10 to 15 mph E 94%
Saturday 70°F Showers And Thunderstorms 10 to 15 mph SE 94%
Saturday Night 58°F Showers And Thunderstorms Likely 10 mph NE 73%
Sunday 67°F Chance Rain Showers 10 to 20 mph NE 43%
Sunday Night 53°F Slight Chance Rain Showers then Mostly Cloudy 10 to 20 mph NE 17%
Monday 64°F Mostly Cloudy 10 to 15 mph NE 14%
Monday Night 50°F Mostly Cloudy then Slight Chance Rain Showers 10 to 15 mph NE 15%
Tuesday 63°F Slight Chance Rain Showers then Partly Sunny 10 to 15 mph NE 15%
Tuesday Night 51°F Mostly Cloudy 5 to 10 mph NE 13%
Wednesday 64°F Partly Sunny 5 to 10 mph NE 13%
Wednesday Night 51°F Mostly Cloudy 5 to 10 mph N 7%
Thursday 67°F Partly Sunny 5 mph NE 3%
Thursday Night 52°F Partly Cloudy 0 to 5 mph N 4%
Friday 69°F Mostly Sunny 5 mph N 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.