Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Blockbuster blizzard buries I-95 corridor with feet of snow. See the latest updates. Chevron right

O'Fallon, MO

26°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

26°
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, 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
Monday, February 23

Current Weather

8:33 PM

26°F
Partly cloudy
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
RealFeel®
31°
Wind
WNW 1 mph
Wind Gusts
1 mph
Humidity
63%
Indoor Humidity
27% (Very Dry)
Dew Point
15° F
Pressure
↓ 30.45 in
Cloud Cover
32%
Visibility
14 mi
Cloud Ceiling
40000 ft

Night

2/23
20°Lo
RealFeel® 17°
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
Partly cloudy and cold

WindSSW 6 mph

Wind Gusts10 mph

Probability of Precipitation0%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover25%

Evening

Overnight

Sun & Moon

11 hrs 05 mins
Rise 6:44 AM
Set 5:49 PM
Waxing Crescent
Rise 9:47 AM
Set 1:16 AM

Temperature History

2/23
High
Low
Forecast
30°
20°
Average
48°
28°
Last Year
57°
17°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Live Blog

Blizzard updates: Northeast travel shut down, over 3 feet piles up

LATEST ENTRY

Travel ban for Southeastern Massachusetts, Rhode Island continues amid blizzard conditions

1 hour ago

Winter Weather

More winter weather on the way behind blockbuster blizzard

7 hours ago

Sparks fly as blizzard knocks out power in Massachussetts

11 hours ago 0:46

Winter Weather

Atmospheric river to blast West Coast with more flooding, snow up high

6 hours ago

Weather Forecasts

Cold blast, freezes and fire danger follow last week's heat

6 hours ago

 More Stories

Featured Stories

Travel

Delta flight returns to airport after engine trouble sparks grass fire

11 hours ago

Winter Weather

6 close friends on ski trip identified among those killed in avalanche

2 days ago

Winter Weather

Utah’s 2026 avalanche season turns deadly after recent surge in slides

3 days ago

Climate

75% of global coffee supply faces rising extreme heat, analysis says

3 days ago

Travel

The island with an air-conditioned ‘forest’ to cope with summers

4 days 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

...

...

...