Brussels, IL Weather & Growing Conditions
Tonight
55°F
Light Rain
Rain and a slight chance of thunderstorms before 2am, then a slight chance of drizzle. Cloudy, with a low around 55. Southwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Light Rain | 8 to 13 mph SW | 77% |
| Wednesday | 62°F | Mostly Cloudy | 9 to 16 mph W | 9% |
| Wednesday Night | 43°F | Partly Cloudy | 8 mph SW | 0% |
| Thursday | 65°F | Sunny | 7 to 14 mph W | 4% |
| Thursday Night | 43°F | Mostly Cloudy | 5 to 8 mph NW | 12% |
| Friday | 58°F | Partly Sunny | 8 to 12 mph NW | 5% |
| Friday Night | 38°F | Mostly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 57°F | Partly Sunny | 5 mph NW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 63°F | Sunny | 2 to 8 mph W | 8% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 3% |
| Monday | 67°F | Sunny | 3 to 8 mph SW | 2% |
| Monday Night | 41°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 69°F | Sunny | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brussels, IL
Last spring frost
Apr 8
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
6b
Explore more for Brussels, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, St Charles Elm Pt, Mo (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.