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Brillion, WI Weather & Growing Conditions

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

Today
63°F
Rain Showers Likely
Rain showers likely before 4pm, then showers and thunderstorms likely. Cloudy, with a high near 63. East southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Brillion

WhenTempForecastWindPrecip
Today 63°F Rain Showers Likely 9 to 13 mph ESE 70%
Tonight 54°F Showers And Thunderstorms Likely 10 mph NE 66%
Sunday 66°F Mostly Sunny 10 to 15 mph NNE 13%
Sunday Night 50°F Mostly Cloudy 8 to 15 mph NE 1%
Monday 60°F Mostly Cloudy 8 to 14 mph NE 2%
Monday Night 46°F Mostly Cloudy 7 to 12 mph NE 2%
Tuesday 61°F Mostly Sunny 7 to 14 mph ENE 2%
Tuesday Night 46°F Mostly Clear 5 to 9 mph NE 3%
Wednesday 63°F Mostly Sunny 5 to 10 mph ENE 3%
Wednesday Night 48°F Partly Cloudy 3 to 7 mph NE 1%
Thursday 66°F Mostly Sunny 3 to 8 mph NE 2%
Thursday Night 48°F Partly Cloudy 1 to 5 mph NE 1%
Friday 70°F Mostly Sunny 2 to 7 mph NE 2%
Friday Night 49°F Partly Cloudy 1 to 5 mph E 2%

Forecast source: National Weather Service (api.weather.gov) for Brillion (44.174, -88.068). Updated through the day.

Growing snapshot for Brillion

Last spring frost
May 6
First fall frost
Oct 6
Growing season
151 days
Hardiness zone
5b

More local growing data for Brillion: nearby ZIP 54110 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Brillion, Wi (1.6 mi from Brillion). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.