Mequon, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mequon, a city in Ozaukee County, Wisconsin.

Tonight

58°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 58. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

7-day forecast for Mequon

When	Temp	Forecast	Wind	Precip
Tonight	58°F	Showers And Thunderstorms	10 to 15 mph E	95%
Saturday	69°F	Showers And Thunderstorms	10 to 15 mph SE	94%
Saturday Night	58°F	Showers And Thunderstorms Likely	10 mph NE	72%
Sunday	66°F	Chance Rain Showers	10 to 20 mph NE	42%
Sunday Night	53°F	Slight Chance Rain Showers then Mostly Cloudy	10 to 20 mph NE	16%
Monday	63°F	Mostly Cloudy	10 to 15 mph NE	14%
Monday Night	49°F	Mostly Cloudy then Slight Chance Rain Showers	10 to 15 mph NE	15%
Tuesday	61°F	Slight Chance Rain Showers then Partly Sunny	10 to 15 mph NE	15%
Tuesday Night	49°F	Mostly Cloudy	5 to 10 mph NE	13%
Wednesday	63°F	Partly Sunny	5 to 10 mph NE	13%
Wednesday Night	50°F	Mostly Cloudy	0 to 5 mph N	6%
Thursday	66°F	Partly Sunny	5 mph NE	3%
Thursday Night	51°F	Partly Cloudy	0 to 5 mph N	4%
Friday	69°F	Mostly Sunny	0 to 5 mph N	4%

Forecast source: National Weather Service (api.weather.gov) for Mequon (43.211, -88.014). Updated through the day.

Growing snapshot for Mequon

Last spring frost

Apr 23

First fall frost

Oct 24

Growing season

182 days

Hardiness zone

More local growing data for Mequon: nearby ZIP 53097 weather · frost dates · planting calendar · Wisconsin frost dates

Nearby towns & communities

Belgium Cedarburg Fredonia Grafton Newburg Port Washington Saukville Thiensville Waubeka

All Wisconsin locations ›

Climate data from the nearest NOAA station, Grafton Wwtp, Wi (5.3 mi from Mequon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.