Brown County, IL Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Brown County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a low around 45. Northwest wind around 16 mph, with gusts as high as 28 mph.
County Weather Overview
This county weather page brings together forecast coverage for Brown County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 0 of 0 mapped cities in Brown County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 16 to Oct 22, 2026
- Latest sync
- Oct 16, 2026 3:03 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Brown County
Thursday looks like the warmest upcoming period in Brown County at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Friday at about 16 to 21 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Oct 16, 2026 3:03 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Scattered rain showers between 1pm and 4pm. Mostly cloudy, with a high near 53. Northwest wind 16 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Partly cloudy, with a low around 36. North wind 5 to 20 mph, with gusts as high as 30 mph.
Sunny, with a high near 58. North wind 0 to 3 mph.
Clear, with a low around 37. South wind 1 to 5 mph.
Sunny, with a high near 66.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 74.
Mostly clear, with a low around 49.
Sunny, with a high near 77.
Mostly clear, with a low around 52.
Sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 16
|
Mostly Cloudy
|
45°F |
16 mph
NW
|
|
Friday
Oct 16
|
Mostly Cloudy then Scattered Rain Showers
|
53°F |
16 to 21 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
36°F |
5 to 20 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
58°F |
0 to 3 mph
N
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
1 to 5 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
5 to 9 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
6 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
70°F |
5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
45°F |
2 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
74°F |
2 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
49°F |
2 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
77°F |
5 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
52°F |
3 mph
SE
|
|
Thursday
Oct 22
|
Sunny
|
78°F |
3 to 7 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Brown County.
Nearby forecast pages are not available for this location yet.
Coverage
Forecast coverage currently spans 0 of 0 mapped cities in Brown County.
