Brown County, IL Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Brown County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
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
- Apr 15 to Apr 18, 2026
- Latest sync
- Apr 11, 2026 10:42 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Brown County
Friday looks like the warmest upcoming period in Brown County at 82 degrees F.
Friday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Friday at about 8 to 16 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 11, 2026 10:42 PM CDT
- Coverage
- 4 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
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
A chance of rain showers. Mostly sunny, with a high near 80. Chance of precipitation is 40%.
A chance of rain showers before 1am. Mostly clear, with a low around 59. Chance of precipitation is 30%.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 50%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 63. Chance of precipitation is 60%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
78°F |
15 mph
SW
|
|
Wednesday Night
Apr 15
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
59°F |
7 to 12 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
80°F |
6 to 10 mph
SW
|
|
Thursday Night
Apr 16
|
Chance Rain Showers
|
59°F |
8 mph
S
|
|
Friday
Apr 17
|
Chance Showers And Thunderstorms
|
82°F |
8 to 16 mph
S
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely
|
51°F |
15 mph
SW
|
|
Saturday
Apr 18
|
Rain Showers Likely
|
63°F |
14 mph
NW
|
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.
