Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Another snowstorm may threaten East Coast this weekend. See the forecast. Chevron right
Death toll rises after snowstorm, severe ice, Arctic air. Get the latest. Chevron right

O'Fallon, MO

11°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

11°
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 Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Wednesday, January 28

Current Weather

4:01 AM

11°F
Mostly cloudy
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
RealFeel®
16°
Wind
NW 2 mph
Wind Gusts
2 mph
Humidity
64%
Indoor Humidity
17% (Extremely Dry)
Dew Point
1° F
Pressure
↔ 30.42 in
Cloud Cover
76%
Visibility
16 mi
Cloud Ceiling
17000 ft

Day

1/28
34°Hi
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
RealFeel Shade™ 27°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
Mostly sunny

Max UV Index3.0 (Moderate)

AccuLumen Brightness Index™9 (Very Bright)

WindW 8 mph

Wind Gusts12 mph

Probability of Precipitation4%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover23%

Morning

Afternoon

Night

1/28
8°Lo
RealFeel® 2°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
Partly cloudy and cold

WindNNW 5 mph

Wind Gusts8 mph

Probability of Precipitation4%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover67%

Evening

Overnight

Sun & Moon

10 hrs 08 mins
Rise 7:12 AM
Set 5:20 PM
Waxing Gibbous
Rise 12:36 PM
Set 4:37 AM

Temperature History

1/28
High
Low
Forecast
34°
8°
Average
41°
22°
Last Year
53°
27°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

40 dead after winter storm snarls travel, brings severe ice, snow

14 hours ago

Winter Weather

Another snowstorm could be on the way for the Gulf Coast, East Coast

15 minutes ago

Winter Weather

"Severe winter of 2025-26" to continue for weeks in Midwest, Northeast

22 minutes ago

Weather News

Power outages persist in the South as bitter cold slows recovery

13 hours ago

Winter Weather

Will Phil see his shadow on Monday? Groundhog Day predictions

14 hours ago

 More Stories

Featured Stories

Weather News

Snow leopard mauls skier in China’s Xinjiang region

16 hours ago

Recreation

Free solo climber conquers one of the world’s tallest buildings

1 day ago

Astronomy

NASA is about to send people to the moon — in a spacecraft not everyon...

1 day ago

Weather News

At least 18 killed, two dozen missing after ferry sinks in Philippines

1 day ago

Weather News

Crowds bid farewell to Japan’s last pandas before return to China

1 day 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 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

...

...

...