Clay City, IL Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Clay City, IL in one place.
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South southwest wind around 5 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Clay City, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 16, 2026 5:48 AM CDT.
The active forecast window currently covers Sep 16 to Sep 22, 2026 for Clay City, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 5:48 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clay City
Wednesday looks like the warmest upcoming period in Clay City at 97 degrees F.
Monday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Saturday at about 5 to 9 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 5:48 AM CDT
- Coverage
- 7 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
A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 9am, then a slight chance of showers and thunderstorms between 9am and 11am. Mostly sunny, with a high near 97. Heat index values as high as 104. South southeast wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Partly cloudy, with a low around 73. Heat index values as high as 100. South wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 97. Heat index values as high as 103. West wind 3 to 7 mph.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 71. North wind around 3 mph.
Sunny, with a high near 93. East northeast wind around 5 mph.
Partly cloudy, with a low around 71. East southeast wind around 3 mph.
Mostly sunny, with a high near 97.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of rain showers. Mostly sunny, with a high near 84.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 16
|
Slight Chance Showers And Thunderstorms
|
72°F |
5 mph
SSW
|
|
Wednesday
Sep 16
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
97°F |
6 mph
SSE
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
73°F |
3 mph
S
|
|
Thursday
Sep 17
|
Mostly Sunny
|
97°F |
3 to 7 mph
W
|
|
Thursday Night
Sep 17
|
Slight Chance Showers And Thunderstorms
|
71°F |
3 mph
N
|
|
Friday
Sep 18
|
Sunny
|
93°F |
5 mph
ENE
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
71°F |
3 mph
ESE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
97°F |
5 to 9 mph
SSW
|
|
Saturday Night
Sep 19
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
71°F |
5 mph
SSW
|
|
Sunday
Sep 20
|
Slight Chance Showers And Thunderstorms
|
94°F |
3 to 8 mph
WNW
|
|
Sunday Night
Sep 20
|
Slight Chance Showers And Thunderstorms
|
68°F |
7 mph
ENE
|
|
Monday
Sep 21
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
88°F |
5 to 9 mph
NW
|
|
Monday Night
Sep 21
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
64°F |
3 to 8 mph
N
|
|
Tuesday
Sep 22
|
Chance Rain Showers
|
84°F |
3 to 7 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Clay City.