Clark County, IL Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Clark County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 77. East wind 5 to 8 mph.
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
- May 29 to Jun 3, 2026
- Latest sync
- May 28, 2026 2:11 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clark County
Saturday looks like the warmest upcoming period in Clark County at 80 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Tuesday at about 7 to 12 mph NE.
The forecast from May 29 through Jun 3 stays mostly dry.
Forecast Details
- Last updated
- May 28, 2026 2:11 AM CDT
- Coverage
- 6 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
Mostly cloudy, with a low around 57. East northeast wind around 3 mph.
Mostly sunny, with a high near 80. East northeast wind 3 to 8 mph.
Partly cloudy, with a low around 58. East northeast wind around 8 mph, with gusts as high as 17 mph.
Mostly sunny, with a high near 78.
Partly cloudy, with a low around 58.
Mostly sunny, with a high near 80.
Mostly clear, with a low around 58.
Sunny, with a high near 78.
Mostly clear, with a low around 56.
Sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 29
|
Mostly Sunny
|
77°F |
5 to 8 mph
E
|
|
Friday Night
May 29
|
Mostly Cloudy
|
57°F |
3 mph
ENE
|
|
Saturday
May 30
|
Mostly Sunny
|
80°F |
3 to 8 mph
ENE
|
|
Saturday Night
May 30
|
Partly Cloudy
|
58°F |
8 mph
ENE
|
|
Sunday
May 31
|
Mostly Sunny
|
78°F |
7 mph
ENE
|
|
Sunday Night
May 31
|
Partly Cloudy
|
58°F |
5 mph
ENE
|
|
Monday
Jun 1
|
Mostly Sunny
|
80°F |
3 to 8 mph
NNE
|
|
Monday Night
Jun 1
|
Mostly Clear
|
58°F |
7 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
78°F |
7 to 12 mph
NE
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
56°F |
5 to 9 mph
NE
|
|
Wednesday
Jun 3
|
Sunny
|
79°F |
8 mph
NE
|
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.
