Shelby County, IL Weather Forecast
County weather hub
Partly Sunny then 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 showers and thunderstorms after 1pm. Partly sunny, with a high near 79. East wind 3 to 7 mph. Chance of precipitation is 40%.
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 26 to May 30, 2026
- Latest sync
- May 24, 2026 3:30 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Shelby County
Thursday looks like the warmest upcoming period in Shelby County at 82 degrees F.
Friday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Friday at about 6 to 10 mph ENE.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 3:30 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 before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. Southeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely. Partly sunny, with a high near 81. Chance of precipitation is 70%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 60%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 82.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 77.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Partly Sunny then Chance Showers And Thunderstorms
|
79°F |
3 to 7 mph
E
|
|
Tuesday Night
May 26
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
64°F |
6 mph
SE
|
|
Wednesday
May 27
|
Showers And Thunderstorms Likely
|
81°F |
5 mph
SE
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
64°F |
3 mph
E
|
|
Thursday
May 28
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
82°F |
2 to 6 mph
ENE
|
|
Thursday Night
May 28
|
Chance Showers And Thunderstorms
|
63°F |
6 mph
ENE
|
|
Friday
May 29
|
Chance Showers And Thunderstorms
|
77°F |
6 to 10 mph
ENE
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms
|
57°F |
9 mph
ENE
|
|
Saturday
May 30
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
74°F |
10 mph
ENE
|
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.
