Fayette County, IL Weather Forecast

County weather hub

83°

Slight Chance Rain Showers

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

Monday, August 24, 2026

Wind: 5 mph SE

Monday

A slight chance of rain showers before 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.

County weather hub

County Weather Overview

This county weather page brings together forecast coverage for Fayette 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 Fayette County.

Page Snapshot

Page focus: county weather
Forecast window: Aug 24 to Aug 25, 2026
Latest sync: Aug 19, 2026 6:37 PM CDT
Forecast office: LSX
Source: NOAA / NWS

Next High

83°F

Monday

Next Low

64°F

Monday Night

Rain Outlook

Periods mentioning precipitation

Windiest

6 mph

Tuesday

Daily Outlook

Today

Aug 24

Slight Chance Rain Showers

83 °F

/ 64°F

Wind 5 mph

Tue

Aug 25

Mostly Sunny

85 °F

/ 65°F

Wind 6 mph

This Week in Fayette County

Tuesday looks like the warmest upcoming period in Fayette County at 85 degrees F.

Monday Night is the coolest period ahead with temperatures near 64 degrees F.

The strongest winds are forecast for Tuesday at about 6 mph SE.

Precipitation is mentioned in 1 upcoming forecast period.

Forecast Details

Last updated: Aug 19, 2026 6:37 PM CDT
Coverage: 2 days
Time zone: America/Chicago
Forecast office: LSX
Radar station: KILX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Monday Night

Aug 24

64°F

Partly Cloudy

5 mph E

Partly cloudy, with a low around 64.

Tuesday

Aug 25

85°F

Mostly Sunny

6 mph SE

Mostly sunny, with a high near 85.

Tuesday Night

Aug 25

65°F

Partly Cloudy

3 mph E

Partly cloudy, with a low around 65.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Monday Aug 24	Slight Chance Rain Showers	83°F	5 mph SE	A slight chance of rain showers before 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Monday Night Aug 24	Partly Cloudy	64°F	5 mph E	Partly cloudy, with a low around 64.
Tuesday Aug 25	Mostly Sunny	85°F	6 mph SE	Mostly sunny, with a high near 85.
Tuesday Night Aug 25	Partly Cloudy	65°F	3 mph E	Partly cloudy, with a low around 65.

Major City Forecasts

Live forecast snapshots for major cities across Fayette County.

Avena

Population 1,924

82°F

Patchy Fog then Sunny

Patchy Fog then Mostly Sunny

Monday

1 mph

Coverage

Tracked cities

Coverage

100%

Forecast coverage currently spans 2 of 2 mapped cities in Fayette County.

Largest mapped city population in this region: 1,924.

Region Links

Illinois weather

Statewide weather overview

United States weather

National weather entry point

Fayette County Courthouse Vandalia 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.