Brillion, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brillion, a city in Calumet County, Wisconsin.
This Afternoon
69°F
Chance Rain Showers
A chance of rain showers and patchy fog. Cloudy. High near 69, with temperatures falling to around 67 in the afternoon. South wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Brillion
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Rain Showers | 12 mph S | 35% |
| Tonight | 59°F | Rain Showers | 13 mph SSE | 86% |
| Wednesday | 65°F | Rain Showers | 12 to 15 mph S | 85% |
| Wednesday Night | 48°F | Rain Showers Likely | 15 mph SW | 60% |
| Thursday | 54°F | Rain Showers | 9 to 13 mph WNW | 84% |
| Thursday Night | 38°F | Chance Rain Showers | 15 mph N | 49% |
| Friday | 46°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 16 mph N | 23% |
| Friday Night | 32°F | Partly Cloudy | 2 to 7 mph NNW | 4% |
| Saturday | 50°F | Mostly Sunny | 2 to 6 mph WNW | 3% |
| Saturday Night | 34°F | Partly Cloudy | 2 to 6 mph WSW | 9% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 6 to 12 mph W | 15% |
| Sunday Night | 36°F | Mostly Clear | 8 mph W | 5% |
| Monday | 57°F | Mostly Sunny | 6 to 14 mph WSW | 1% |
| Monday Night | 40°F | Partly Cloudy | 12 mph W | 1% |
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
Nearby towns & communities
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 Nov 4, 2026.