Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
The heat dome is shifting. Click to see where the heat is headed next. Chevron right

Clayton, IL

67°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Clayton

Illinois

67°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Clayton, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Tuesday, July 21

Day

7/21
84°Hi
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
RealFeel Shade™ 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Mostly sunny and less humid

Max UV Index10.0 (Very High)

WindE 9 mph

Wind Gusts18 mph

Probability of Precipitation10%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover13%

Morning

Afternoon

Night

7/21
66°Lo
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
A crystal-clear sky

WindE 8 mph

Wind Gusts15 mph

Probability of Precipitation10%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover8%

Evening

Overnight

Sun & Moon

14 hrs 35 mins
Rise 5:53 AM
Set 8:28 PM
First Quarter
Rise 2:01 PM
Set 12:13 AM

Temperature History

7/21
High
Low
Forecast
84°
66°
Average
86°
67°
Last Year
85°
72°
Record
110°
1901
52°
1944

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Storms, downpours to persist this week across central, eastern US

2 hours ago

Hurricane

Atlantic hurricane season off to a slow start as El Niño strengthens

2 hours ago

Severe Weather

Storms, heat and floods disrupt America’s 250th birthday celebrations

17 hours ago

Weather Forecasts

Extreme heat to shift west into mid-July prior to return of monsoon

2 hours ago
Live Blog

Live: World Cup 2026 weather updates

LATEST ENTRY

Storms delay Mexico vs. England showdown in Mexico City

22 hours ago

 More Stories

Featured Stories

Weather News

Texas Hill Country marks 1 year since deadly July 4 flood

3 days ago

Health

NYC Legionnaires' disease outbreak jumps to 14 confirmed cases

22 hours ago

Weather News

Mother dies trying to save son from Tennessee floodwaters

20 hours ago

Travel

Plane makes hard landing into New York’s East River, officials say

21 hours ago

Recreation

Girl survives rabid bat attack after receiving lifesaving treatment

4 days ago
World North America United States Illinois Clayton

Weather Near Clayton:

  • Hannibal, MO
  • Macomb, IL
  • Quincy, IL
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...