Brown County, IL Weather Forecast
County weather hub
Mostly Sunny then Chance Showers And Thunderstorms
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A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South wind 0 to 3 mph. Chance of precipitation is 30%.
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
- Jul 16 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 7:20 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Brown County
Saturday looks like the warmest upcoming period in Brown County at 93 degrees F.
Thursday Night is the coolest period ahead with temperatures near 72 degrees F.
The strongest winds are forecast for Tuesday at about 7 to 13 mph N.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 7:20 AM CDT
- Coverage
- 6 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
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Southwest wind around 3 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm. Mostly clear, with a low around 73. Chance of precipitation is 60%.
Sunny, with a high near 93.
Mostly clear, with a low around 73.
Sunny, with a high near 91.
Mostly clear, with a low around 73.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Sunny, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
0 to 3 mph
S
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms
|
72°F |
3 mph
SW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
3 to 7 mph
W
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Mostly Clear
|
73°F |
5 to 8 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
93°F |
10 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
73°F |
6 to 9 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
91°F |
6 mph
SW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
73°F |
7 mph
S
|
|
Monday
Jul 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
10 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
72°F |
6 to 9 mph
NW
|
|
Tuesday
Jul 21
|
Sunny
|
88°F |
7 to 13 mph
N
|
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.
