Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Tornadoes turn deadly, cause significant damage in Midwest. See the latest updates: Chevron right
Severe weather outbreak to reach 20+ states. Click for details. Chevron right

O'Fallon, IL

61°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Illinois

61°
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
O'Fallon, IL Weather
Today WinterCast Local {stormName} Tracker Hourly Daily 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

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

10 AM

62°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 70%
Chevron down
Rain

RealFeel Shade™55°

WindWNW 14 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts27 mph

Humidity93%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.04 in

Visibility5 mi

Cloud Ceiling1600 ft

11 AM

63°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 56%
Chevron down
Rain

RealFeel Shade™56°

WindNW 16 mph

Air QualityExcellent

Max UV Index0.7 (Low)

Wind Gusts29 mph

Humidity80%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.05 in

Visibility5 mi

Cloud Ceiling1600 ft

12 PM

57°
RealFeel® 50°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™49°

WindNW 22 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts32 mph

Humidity77%

Indoor Humidity52% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling1700 ft

1 PM

54°
RealFeel® 45°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™44°

WindNW 24 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts37 mph

Humidity71%

Indoor Humidity43% (Ideal Humidity)

Dew Point45° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling1700 ft

2 PM

51°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™40°

WindNW 21 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts33 mph

Humidity72%

Indoor Humidity39% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

3 PM

50°
RealFeel® 37°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 51%
Chevron down
Showers

RealFeel Shade™37°

WindNW 21 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts36 mph

Humidity68%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.02 in

Visibility6 mi

Cloud Ceiling2200 ft

4 PM

47°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™35°

WindNW 21 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts37 mph

Humidity70%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2500 ft

5 PM

48°
RealFeel® 37°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™37°

WindNNW 21 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts38 mph

Humidity65%

Indoor Humidity31% (Slightly Dry)

Dew Point36° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling4000 ft

6 PM

47°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™36°

WindNNW 20 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts36 mph

Humidity62%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling5500 ft

7 PM

47°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 23%
Chevron down
Cloudy

RealFeel Shade™36°

WindNNW 20 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts32 mph

Humidity60%

Indoor Humidity42% (Slightly Dry)

Dew Point34° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling7100 ft

8 PM

45°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 2%
Chevron down
Mostly clear

WindNNW 22 mph

Air QualityFair

Wind Gusts37 mph

Humidity63%

Indoor Humidity41% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

44°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 2%
Chevron down
Mostly clear

WindNNW 21 mph

Air QualityFair

Wind Gusts38 mph

Humidity64%

Indoor Humidity41% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

44°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 2%
Chevron down
Mostly clear

WindNNW 20 mph

Air QualityFair

Wind Gusts37 mph

Humidity60%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

43°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 2%
Chevron down
Clear

WindNNW 18 mph

Air QualityFair

Wind Gusts35 mph

Humidity61%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover7%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Friday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Severe outbreak in 20+ states brings nighttime tornado danger

1 hour ago
Live Blog

Live updates: Tornadoes hit central US amid severe weather outbreak

LATEST ENTRY

Danger not over yet as storms move east, AccuWeather meteorologists say

30 minutes ago

Winter Weather

High winds to roar from Rockies to Northeast with northern tier snow

10 minutes ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

20 hours ago

Weather Forecasts

Wintry weather to return: Arctic air to whisk away warmth in East

1 hour ago

 More Stories

Featured Stories

Travel

FAA launches air taxi test program in 26 states

22 hours ago

Weather News

Indiana just changed the law for rescuing pets trapped in hot cars

22 hours ago

Weather News

Huge fire in Scotland triggers train chaos, partial collapse of histor...

23 hours ago

Recreation

25-year-old becomes 1st American woman to row solo across Atlantic

4 days ago

Weather News

Louisiana rocked by 4 earthquakes days after strongest quake in decade...

1 day ago
World North America United States Illinois O'Fallon

Weather Near O'Fallon:

  • 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

...

...

...