Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Weekend storm to swipe East Coast with snow as far south as Georgia. See the forecast. Chevron right

O'Fallon, MO

41°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

41°
No results found.
Try searching for a city, zip code or point of interest.
Create Account Unlock extended daily forecasts and additional saved locations — all with your free account.
Let's Go Chevron right
Have an account already? Login
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 WinterCast

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

WinterCast

Little to no accumulation

Fri, 1/16, 9:00 PM - Sat, 1/17, 12:00 AM

Snow

6 PM

37°
RealFeel® 27°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 49%
Chevron down
Showers

WindW 10 mph

Air QualityExcellent

Wind Gusts18 mph

Humidity57%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling6000 ft

7 PM

38°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 45%
Chevron down
Cloudy

WindW 14 mph

Air QualityExcellent

Wind Gusts21 mph

Humidity62%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling6100 ft

8 PM

37°
RealFeel® 25°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 43%
Chevron down
Cloudy

WindW 15 mph

Air QualityExcellent

Wind Gusts20 mph

Humidity68%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling6100 ft

9 PM

36°
RealFeel® 22°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 47%
Chevron down
Flurries

WindW 15 mph

Air QualityExcellent

Wind Gusts18 mph

Humidity70%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Snowtrace

Visibility10 mi

Cloud Ceiling6100 ft

10 PM

34°
RealFeel® 20°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

WindWNW 16 mph

Air QualityExcellent

Wind Gusts20 mph

Humidity64%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling7000 ft

11 PM

31°
RealFeel® 16°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 44%
Chevron down
Flurries

WindWNW 16 mph

Air QualityExcellent

Wind Gusts21 mph

Humidity58%

Indoor Humidity29% (Very Dry)

Dew Point18° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Snowtrace

Visibility10 mi

Cloud Ceiling7000 ft

Further Ahead

Tomorrow

Sunday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Storm to bring snow from Georgia to North Carolina, graze Northeast

2 hours ago

Winter Weather

Large storms with snow and ice may be on the horizon for next week

3 hours ago

Climate

Western US faces worsening snow drought, with California the exception

6 hours ago

Winter Weather

Rounds of snow to create hazardous travel from Midwest to Northeast

2 hours ago

Winter Weather

1 dead after 5 pileups on snowy roads in New York, Pennsylvania

5 hours ago

 More Stories

Featured Stories

Climate

Why this famous iceberg turned blue and what it says about melting ice

3 hours ago

Astronomy

NASA to roll out Artemis II rocket ahead of astronaut moon launch

11 minutes ago

Recreation

Death of 2 Florida students highlights risks of sand collapse

1 day ago

Astronomy

March’s total lunar eclipse will turn the moon red, here’s when to see...

2 days ago

Recreation

Rare and majestic sand sculptures only exist for minutes

5 hours ago
World North America United States Missouri O'Fallon

Weather Near O'Fallon:

  • St. Charles, MO
  • St. Louis, MO
  • St. Peters, 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
© 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

...

...

...