Clay County, IL Weather Forecast
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Chance Showers And Thunderstorms
Compare major city weather across Clay County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 88. West southwest wind 1 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Clay County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Clay County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 14, 2026 10:10 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clay County
Saturday looks like the warmest upcoming period in Clay County at 90 degrees F.
Friday Night is the coolest period ahead with temperatures near 72 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 10 mph WNW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 10:10 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KVWX
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 slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 72. West southwest wind around 3 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 89.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72.
Mostly sunny, with a high near 90.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 72.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
88°F |
1 to 5 mph
WSW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
72°F |
3 mph
WSW
|
|
Saturday
Jul 18
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
90°F |
5 to 9 mph
W
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
72°F |
6 mph
W
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
7 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
72°F |
5 mph
WSW
|
|
Monday
Jul 20
|
Mostly Sunny
|
90°F |
5 to 8 mph
WSW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
72°F |
7 mph
WSW
|
|
Tuesday
Jul 21
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
88°F |
6 to 10 mph
WNW
|
Major City Forecasts
Live forecast snapshots for major cities across Clay County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Clay County.
Largest mapped city population in this region: 4,831.