Brussels, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Scattered Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Brussels, IL in one place.
Scattered showers and thunderstorms after 3pm. Mostly sunny, with a high near 84. South wind 6 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Brussels, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 16, 2026 7:55 PM CDT.
The active forecast window currently covers Apr 17 to Apr 22, 2026 for Brussels, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 7:55 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Brussels
Friday looks like the warmest upcoming period in Brussels at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 39 degrees F.
The strongest winds are forecast for Saturday at about 16 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 7:55 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms before 1am, then showers and thunderstorms. Mostly cloudy. Low around 47, with temperatures rising to around 55 overnight. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Scattered rain showers. Mostly sunny, with a high near 59. Northwest wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
A slight chance of rain showers before 7pm. Mostly clear, with a low around 39. Chance of precipitation is 20%.
Sunny, with a high near 66.
Mostly clear, with a low around 43.
Sunny, with a high near 74.
Mostly clear, with a low around 52.
Mostly sunny, with a high near 77.
Partly cloudy, with a low around 57.
Sunny, with a high near 79.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 58. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Mostly Sunny then Scattered Showers And Thunderstorms
|
84°F |
6 to 14 mph
S
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms
|
47°F |
14 mph
SW
|
|
Saturday
Apr 18
|
Scattered Rain Showers
|
59°F |
16 mph
NW
|
|
Saturday Night
Apr 18
|
Slight Chance Rain Showers then Mostly Clear
|
39°F |
6 to 15 mph
W
|
|
Sunday
Apr 19
|
Sunny
|
66°F |
6 to 13 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
43°F |
5 to 8 mph
NE
|
|
Monday
Apr 20
|
Sunny
|
74°F |
6 to 9 mph
SE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
52°F |
9 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
77°F |
9 to 14 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
57°F |
7 to 10 mph
SW
|
|
Wednesday
Apr 22
|
Sunny
|
79°F |
6 to 9 mph
SW
|
|
Wednesday Night
Apr 22
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
58°F |
7 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Brussels.
Nearby forecast pages are not available for this location yet.