Clinton County, IL Weather Forecast

County weather hub

86°

Sunny

Compare major city weather across Clinton County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.

Saturday, August 29, 2026

Wind: 2 mph SE

Saturday

Sunny, with a high near 86.

County weather hub

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: Aug 29 to Sep 1, 2026
Latest sync: Aug 26, 2026 3:56 AM CDT
Forecast office: LSX
Source: NOAA / NWS

Next High

86°F

Saturday

Next Low

65°F

Saturday Night

Rain Outlook

Periods mentioning precipitation

Windiest

2 to 10 mph

Sunday

Daily Outlook

Today

Aug 29

Sunny

86 °F

/ 65°F

Wind 2 mph

Sun

Aug 30

Sunny

91 °F

/ 71°F

Wind 2 to 10 mph

Mon

Aug 31

Sunny

94 °F

/ 74°F

Wind 5 to 8 mph

Tue

Sep 1

Mostly Sunny

94 °F

Wind 3 mph

This Week in Clinton County

Monday looks like the warmest upcoming period in Clinton County at 94 degrees F.

Saturday Night is the coolest period ahead with temperatures near 65 degrees F.

The strongest winds are forecast for Sunday at about 2 to 10 mph S.

The forecast from Aug 29 through Sep 1 stays mostly dry.

Forecast Details

Last updated: Aug 26, 2026 3:56 AM CDT
Coverage: 4 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 source

Extended Forecast

Saturday Night

Aug 29

65°F

Mostly Clear

2 mph SE

Mostly clear, with a low around 65.

Sunday

Aug 30

91°F

Sunny

2 to 10 mph S

Sunny, with a high near 91.

Sunday Night

Aug 30

71°F

Mostly Clear

5 mph S

Mostly clear, with a low around 71.

Monday

Aug 31

94°F

Sunny

5 to 8 mph S

Sunny, with a high near 94.

Monday Night

Aug 31

74°F

Mostly Clear

6 mph S

Mostly clear, with a low around 74.

Tuesday

Sep 1

94°F

Mostly Sunny

3 mph SW

Mostly sunny, with a high near 94.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Saturday Aug 29	Sunny	86°F	2 mph SE	Sunny, with a high near 86.
Saturday Night Aug 29	Mostly Clear	65°F	2 mph SE	Mostly clear, with a low around 65.
Sunday Aug 30	Sunny	91°F	2 to 10 mph S	Sunny, with a high near 91.
Sunday Night Aug 30	Mostly Clear	71°F	5 mph S	Mostly clear, with a low around 71.
Monday Aug 31	Sunny	94°F	5 to 8 mph S	Sunny, with a high near 94.
Monday Night Aug 31	Mostly Clear	74°F	6 mph S	Mostly clear, with a low around 74.
Tuesday Sep 1	Mostly Sunny	94°F	3 mph SW	Mostly sunny, with a high near 94.

Major City Forecasts

Live forecast snapshots for major cities across Clinton County.

Coverage

Tracked cities

Coverage

100%

Forecast coverage currently spans 4 of 4 mapped cities in Clinton County.

Largest mapped city population in this region: 4,538.

Region Links

Illinois weather

Statewide weather overview

United States weather

National weather entry point

USACE Carlyle Lake and Dam image

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.