Clark County, IL Weather Forecast
County weather hub
Sunny
Compare major city weather across Clark County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 85.
County Weather Overview
This county weather page brings together forecast coverage for Clark 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 Clark County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Aug 31, 2026
- Latest sync
- Aug 25, 2026 5:12 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clark County
Monday looks like the warmest upcoming period in Clark County at 91 degrees F.
Saturday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Sunday at about 6 to 12 mph S.
The forecast from Aug 29 through Aug 31 stays mostly dry.
Forecast Details
- Last updated
- Aug 25, 2026 5:12 AM CDT
- Coverage
- 3 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
Partly cloudy, with a low around 65.
Mostly sunny, with a high near 89.
Mostly clear, with a low around 71.
Mostly sunny, with a high near 91.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Sunny
|
85°F |
2 to 6 mph
E
|
|
Saturday Night
Aug 29
|
Partly Cloudy
|
65°F |
6 mph
ESE
|
|
Sunday
Aug 30
|
Mostly Sunny
|
89°F |
6 to 12 mph
S
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
71°F |
8 mph
S
|
|
Monday
Aug 31
|
Mostly Sunny
|
91°F |
12 mph
SSW
|
Major City Forecasts
Live forecast snapshots for major cities across Clark County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Clark County.
Largest mapped city population in this region: 3,774.
