Shelby County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Shelby County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 10am, then a chance of showers and thunderstorms between 10am and 1pm. Partly sunny, with a high near 76. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Shelby County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Shelby County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 15 to May 19, 2026
- Latest sync
- May 13, 2026 9:25 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Shelby County
Monday looks like the warmest upcoming period in Shelby County at 89 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Monday at about 13 to 20 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- May 13, 2026 9:25 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- 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 between 7pm and 10pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 62. South wind 5 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. South southwest wind 5 to 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 68.
Showers and thunderstorms likely. Partly sunny, with a high near 79.
Showers and thunderstorms likely. Mostly cloudy, with a low around 59.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 15
|
Chance Showers And Thunderstorms
|
76°F |
10 to 15 mph
S
|
|
Friday Night
May 15
|
Chance Showers And Thunderstorms
|
62°F |
5 to 10 mph
S
|
|
Saturday
May 16
|
Chance Showers And Thunderstorms
|
84°F |
5 to 9 mph
SSW
|
|
Saturday Night
May 16
|
Chance Showers And Thunderstorms
|
63°F |
8 mph
S
|
|
Sunday
May 17
|
Slight Chance Showers And Thunderstorms
|
86°F |
7 to 16 mph
S
|
|
Sunday Night
May 17
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
68°F |
14 mph
S
|
|
Monday
May 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
13 to 20 mph
S
|
|
Monday Night
May 18
|
Chance Showers And Thunderstorms
|
68°F |
12 to 16 mph
S
|
|
Tuesday
May 19
|
Showers And Thunderstorms Likely
|
79°F |
12 to 16 mph
SSW
|
|
Tuesday Night
May 19
|
Showers And Thunderstorms Likely
|
59°F |
6 to 10 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Shelby County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Shelby County.
Largest mapped city population in this region: 3,967.
