Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Over 100 million face wintry cold blast early next week. Get the forecast. Chevron right

O'Fallon, MO

55°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

55°
No results found.
Try searching for a city, zip code or point of interest.
settings
O'Fallon, MO 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

8 PM

55°
RealFeel® 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindNW 13 mph

Air QualityPoor

Wind Gusts24 mph

Humidity66%

Indoor Humidity42% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling2000 ft

9 PM

55°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindNW 14 mph

Air QualityPoor

Wind Gusts25 mph

Humidity67%

Indoor Humidity42% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling1700 ft

10 PM

52°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindNW 15 mph

Air QualityPoor

Wind Gusts29 mph

Humidity72%

Indoor Humidity40% (Ideal Humidity)

Dew Point43° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling1700 ft

11 PM

49°
RealFeel® 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindNW 17 mph

Air QualityPoor

Wind Gusts33 mph

Humidity74%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling1700 ft

Further Ahead

Tomorrow

Monday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Arctic air advances, ushering in coldest air of the season for some

5 hours ago

Winter Weather

First snow, wintry travel of the season soon for Midwest and Northeast

5 hours ago

Weather News

Homes are collapsing in North Carolina. It could spell trouble for oth...

1 day ago

Astronomy

Blue Origin to attempt second New Glenn rocket launch, booster landing

1 day ago

Severe Weather

Severe thunderstorms to hammer eastern US

5 hours ago

 More Stories

Featured Stories

Weather News

50 years later, remembering the wreck of the Edmund Fitzgerald

Recreation

A fleeting autumn illusion turns N.C. mountain into an 'animal'

1 day ago

Travel

Hundreds of US flights are getting slashed as the shutdown continues

1 day ago

Climate

Amazon lakes became ‘simmering basins’ as temperatures spiked

1 day ago

Climate

Antarctic glacier saw the fastest retreat in modern history

3 days ago
World North America United States Missouri 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 RealFeel® and RealFeel Shade™ 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 RealFeel® and RealFeel Shade™ 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
© 2025 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

...

...

...