Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Summerlike heat, humidity is about to arrive in the East. See how hot it will get. Chevron right
Multiday severe weather risk in the central U.S. to ramp up this weekend. Get the forecast. Chevron right

Glen Carbon, IL

71°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Glen Carbon

Illinois

71°
No results found.
Try searching for a city, zip code or point of interest.
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
Glen Carbon, 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
Sunday, May 17

Day

5/17
89°Hi
RealFeel® 90°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
RealFeel Shade™ 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
Partly sunny, breezy and warmer

Max UV Index10.0 (Very High)

AccuLumen Brightness Index™9 (Very Bright)

WindS 15 mph

Wind Gusts30 mph

Probability of Precipitation8%

Probability of Thunderstorms2%

Precipitation0.00 in

Cloud Cover26%

Morning

Afternoon

Night

5/17
70°Lo
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Mainly clear and warm

WindSSE 9 mph

Wind Gusts24 mph

Probability of Precipitation17%

Probability of Thunderstorms4%

Precipitation0.00 in

Cloud Cover23%

Evening

Overnight

Sun & Moon

14 hrs 21 mins
Rise 5:46 AM
Set 8:07 PM
Waxing Crescent
Rise 5:57 AM
Set 9:50 PM

Temperature History

5/17
High
Low
Forecast
89°
70°
Average
75°
56°
Last Year
73°
56°

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Climate

Super El Niño could strain food and water supplies around the world

1 day ago

Severe Weather

Multi-day severe risk in the central US; biggest threat Sunday, Monday

6 hours ago

Weather Forecasts

Summerlike heat, humidity to send RealFeel® temps near 100 F in East

7 hours ago

Severe Weather

Deadly storms, flooding rain kill at least 96 in India

13 hours ago

Winter Weather

Winter to return to Colorado, Wyoming with more May mountain snow

14 hours ago

 More Stories

Featured Stories

Hurricane

El Nino to fuel Pacific hurricane season, raise risks for California

18 hours ago

Health

Wet spring, more mice? The weather link behind rare hantavirus risk

1 day ago

Climate

Turkmenistan's fiery 'Gates of Hell' crater is dimming

1 day ago

Weather News

Here's how New York residents can get free A/C this summer

2 days ago

Recreation

Brain-eating amoeba found in hot springs at 3 National Parks: study

3 days ago
World North America United States Illinois Glen Carbon

Weather Near Glen Carbon:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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

...

...

...