Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Resurgence of severe weather to jolt the central US this week. See the forecast. Chevron right

O'Fallon, MO

64°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

64°
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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

4 AM

63°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSW 7 mph

Air QualityFair

Wind Gusts10 mph

Humidity87%

Indoor Humidity74% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

63°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity89%

Indoor Humidity74% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

62°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity91%

Indoor Humidity74% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

61°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity94%

Indoor Humidity73% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

61°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™58°

WindS 12 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts17 mph

Humidity97%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

63°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™59°

WindS 13 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts20 mph

Humidity96%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling16400 ft

10 AM

67°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™64°

WindS 14 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts22 mph

Humidity86%

Indoor Humidity84% (Humid)

Dew Point63° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling14700 ft

11 AM

71°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™68°

WindS 14 mph

Air QualityFair

Max UV Index2.5 (Moderate)

Wind Gusts25 mph

Humidity77%

Indoor Humidity77% (Humid)

Dew Point64° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling19800 ft

12 PM

74°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™71°

WindSSW 15 mph

Air QualityFair

Max UV Index3.4 (Moderate)

Wind Gusts25 mph

Humidity70%

Indoor Humidity70% (Humid)

Dew Point64° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling24900 ft

1 PM

76°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™73°

WindSSW 16 mph

Air QualityFair

Max UV Index4.3 (Moderate)

Wind Gusts25 mph

Humidity65%

Indoor Humidity65% (Humid)

Dew Point64° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

78°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

RealFeel Shade™76°

WindS 14 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts23 mph

Humidity61%

Indoor Humidity61% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

80°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

RealFeel Shade™77°

WindS 15 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts27 mph

Humidity58%

Indoor Humidity58% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

81°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

RealFeel Shade™78°

WindS 16 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts29 mph

Humidity55%

Indoor Humidity55% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

80°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Cloudy

RealFeel Shade™78°

WindS 15 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts28 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling23200 ft

6 PM

78°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Cloudy

RealFeel Shade™75°

WindS 14 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts27 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling16500 ft

7 PM

76°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

RealFeel Shade™73°

WindS 14 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts25 mph

Humidity68%

Indoor Humidity68% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling9700 ft

8 PM

74°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Cloudy

WindSSW 15 mph

Air QualityFair

Wind Gusts30 mph

Humidity72%

Indoor Humidity72% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling11400 ft

9 PM

73°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Cloudy

WindSSW 16 mph

Air QualityFair

Wind Gusts30 mph

Humidity72%

Indoor Humidity72% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling13000 ft

10 PM

72°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 24%
Chevron down
Cloudy

WindSSW 16 mph

Air QualityFair

Wind Gusts27 mph

Humidity74%

Indoor Humidity74% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling14700 ft

11 PM

72°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 43%
Chevron down
Cloudy

WindSSW 15 mph

Air QualityFair

Wind Gusts23 mph

Humidity76%

Indoor Humidity76% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling12100 ft

Further Ahead

Tomorrow

Thursday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Central US to face renewed threat for severe storms, tornadoes

46 minutes ago

Severe Weather

Michigan's deadly EF3 tornado among state's earliest on record

13 hours ago

Weather News

Louisiana rocked by 4 earthquakes days after strongest quake in decade...

15 hours ago

Weather Forecasts

Fresh surge of storms to renew flood threat in Central US this week

45 minutes ago

Winter Weather

When does winter cold really end in your city?

3 days ago

 More Stories

Featured Stories

Weather News

Indiana just changed the law for rescuing pets trapped in hot cars

12 hours ago

Recreation

25-year-old becomes 1st American woman to row solo across Atlantic

3 days ago

Recreation

When will DC cherry blossoms reach peak bloom? 2026 forecast released

4 days ago

Recreation

Death Valley’s best superbloom since 2016 is here

5 days ago

Weather News

Louisiana rocked by 4 earthquakes days after strongest quake in decade...

15 hours 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 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

...

...

...