Clinton County, IL Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Clinton County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers between 7am and 1pm, then showers and thunderstorms likely. Mostly cloudy. High near 72, with temperatures falling to around 68 in the afternoon. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
County Weather Overview
This county weather page brings together forecast coverage for Clinton County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Clinton County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 10 to Apr 16, 2026
- Latest sync
- Apr 9, 2026 10:06 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clinton County
Tuesday looks like the warmest upcoming period in Clinton County at 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Sunday at about 9 to 20 mph S.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 10:06 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
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. Mostly cloudy, with a low around 51. Northeast wind around 7 mph. Chance of precipitation is 30%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 74. East wind around 7 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 59. Southeast wind 6 to 9 mph. Chance of precipitation is 30%.
Partly sunny, with a high near 79.
Showers and thunderstorms likely after 7pm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Showers And Thunderstorms Likely
|
72°F |
10 mph
W
|
|
Friday Night
Apr 10
|
Chance Showers And Thunderstorms
|
51°F |
7 mph
NE
|
|
Saturday
Apr 11
|
Chance Rain Showers
|
74°F |
7 mph
E
|
|
Saturday Night
Apr 11
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
59°F |
6 to 9 mph
SE
|
|
Sunday
Apr 12
|
Partly Sunny
|
79°F |
9 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
64°F |
16 mph
S
|
|
Monday
Apr 13
|
Showers And Thunderstorms Likely
|
81°F |
14 to 20 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Showers And Thunderstorms
|
67°F |
15 mph
S
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
84°F |
13 to 18 mph
S
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms
|
66°F |
15 mph
S
|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms
|
81°F |
14 to 18 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
59°F |
7 to 13 mph
SW
|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms
|
78°F |
7 to 10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Clinton County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Clinton County.
Largest mapped city population in this region: 4,538.
