Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Cold surge to trigger accumulating snow in parts of Midwest, Northeast. Get the forecast. Chevron right
Blustery conditions may stir flight delays, as well as leaves in Northeast. Click for more info. Chevron right

O'Fallon, MO

57°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

57°
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

Today's Weather

Wed, Nov 5

Breezy and pleasant with plenty of sun Hi: 71°

Tonight: Clear and colder Lo: 37°

Current Weather

6:37 PM

57°F
RealFeel® 58°
Clear More Details
Wind N 3 mph
Wind Gusts 6 mph
Air Quality Poor

Looking Ahead

Coldest air so far this season on the way late this weekend; check AccuWeather often

O'Fallon Weather Radar

O'Fallon Weather Radar
Static Radar Temporarily Unavailable
Thank you for your patience as we work to get everything up and running again.
Refresh Page
Clouds
Temperature

Hourly Weather

7 PM 56°
rain drop 0%
8 PM 53°
rain drop 0%
9 PM 50°
rain drop 0%
10 PM 48°
rain drop 0%
11 PM 46°
rain drop 0%
12 AM 44°
rain drop 0%
1 AM 43°
rain drop 0%
2 AM 42°
rain drop 0%
3 AM 41°
rain drop 0%
4 AM 40°
rain drop 0%
5 AM 39°
rain drop 0%
6 AM 37°
rain drop 0%

10-Day Weather Forecast

Today

11/5

71° 37°

Sunny, breezy and pleasant

Night: Clear and colder
0%

Thu

11/6

67° 55°

Partly sunny and nice

Mostly cloudy, a shower late
1%

Fri

11/7

72° 44°

A passing morning shower

Partly cloudy
55%

Sat

11/8

65° 34°

A couple of afternoon showers

Breezy early; cloudy, chilly
85%

Sun

11/9

40° 28°

Colder; a morning shower

Mostly cloudy and cold
49%

Mon

11/10

44° 29°

Cold; breezy in the morning

Mainly clear and cold
1%

Tue

11/11

55° 43°

Sun through high clouds

Mainly clear
0%

Wed

11/12

64° 40°

Decreasing clouds

Clear
1%

Thu

11/13

63° 47°

A blend of sun and clouds

Partly cloudy
0%

Fri

11/14

71° 54°

Mostly sunny and warm

Partly cloudy
20%

Sun & Moon

10 hrs 25 mins
Rise 6:32 AM
Set 4:57 PM
Full Moon
Rise 4:47 PM
Set 8:05 AM

Air Quality

See More
Air Quality Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Allergy Outlook

See All
Tree Pollen Low Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander High Data is not supported in this location

Top Stories

Weather Forecasts

Potent storm to kick up disruptive winds in Midwest and Northeast

5 hours ago

Winter Weather

Upcoming cold wave to be accompanied by snow in Midwest, Appalachians

29 minutes ago

Severe Weather

A 'gustnado' hit Massachusetts Monday night

7 hours ago

Astronomy

A supermoon is about to rise, here's how to see it

7 hours ago

Weather Forecasts

Pacific storm barrage in northwestern US to finally break this weekend

3 hours ago

 More Stories

Featured Stories

Hurricane

Desperate survivors in Jamaica try to kickstart recovery as they wait

1 day ago

Climate

Antarctic glacier saw the fastest retreat in modern history

8 hours ago

Travel

Is it safe to fly during the government shutdown?

1 day ago

Hurricane

Decades after tragedy struck, Hurricane Hunters still risk their lives

6 days ago

Weather News

Clocks ‘fell back’ this weekend, but you didn’t prepare. What now

1 day 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

...

...

...