Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™

O'Fallon, MO

60°F
Location Chevron down
Location News Videos
Use Current Location
Recent

O'Fallon

Missouri

60°
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 10-Day 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

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

10 AM

60°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™57°

WindENE 7 mph

Air QualityExcellent

Max UV Index4.7 (Moderate)

Wind Gusts9 mph

Humidity75%

Indoor Humidity55% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover44%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

62°
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™60°

WindENE 7 mph

Air QualityExcellent

Max UV Index3.5 (Moderate)

Wind Gusts10 mph

Humidity70%

Indoor Humidity58% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling5600 ft

12 PM

65°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™62°

WindENE 8 mph

Air QualityExcellent

Max UV Index4.4 (Moderate)

Wind Gusts12 mph

Humidity65%

Indoor Humidity59% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling4200 ft

1 PM

67°
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™64°

WindNE 8 mph

Air QualityExcellent

Max UV Index4.6 (Moderate)

Wind Gusts13 mph

Humidity65%

Indoor Humidity62% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2700 ft

2 PM

68°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

RealFeel Shade™65°

WindENE 8 mph

Air QualityExcellent

Max UV Index4.2 (Moderate)

Wind Gusts14 mph

Humidity64%

Indoor Humidity64% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2700 ft

3 PM

68°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

RealFeel Shade™65°

WindENE 8 mph

Air QualityExcellent

Max UV Index3.2 (Moderate)

Wind Gusts15 mph

Humidity65%

Indoor Humidity65% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2600 ft

4 PM

69°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

RealFeel Shade™66°

WindENE 9 mph

Air QualityExcellent

Max UV Index2.1 (Low)

Wind Gusts17 mph

Humidity64%

Indoor Humidity64% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2600 ft

5 PM

67°
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

RealFeel Shade™65°

WindENE 9 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts17 mph

Humidity67%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2600 ft

6 PM

67°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

RealFeel Shade™65°

WindENE 9 mph

Air QualityExcellent

Max UV Index0.9 (Low)

Wind Gusts17 mph

Humidity68%

Indoor Humidity65% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2600 ft

7 PM

66°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 2%
Chevron down
Intermittent clouds

RealFeel Shade™64°

WindENE 8 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts16 mph

Humidity69%

Indoor Humidity64% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2600 ft

8 PM

65°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 3%
Chevron down
Cloudy

RealFeel Shade™63°

WindENE 7 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts14 mph

Humidity70%

Indoor Humidity64% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2700 ft

9 PM

64°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 3%
Chevron down
Cloudy

WindE 6 mph

Air QualityExcellent

Wind Gusts12 mph

Humidity72%

Indoor Humidity62% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2700 ft

10 PM

62°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 3%
Chevron down
Cloudy

WindE 6 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity75%

Indoor Humidity60% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2700 ft

11 PM

62°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 3%
Chevron down
Cloudy

WindE 6 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity74%

Indoor Humidity60% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling2500 ft

Hourly Weather Forecast for O'Fallon

AccuWeather's hourly forecast for O'Fallon provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 60° with a RealFeel® of 65°, partly sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Saturday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Severe storms with damaging winds to focus on central US

4 hours ago

Weather Forecasts

Northeast temps to crash 25° to 50°F ahead of Memorial Day weekend

2 hours ago

Weather News

Man rescued from Santa Rosa Island; SOS written on charred landscape

1 hour ago

Hurricane

Hurricane Hunters will drop new drone into Atlantic hurricanes to meas...

21 hours ago

Weather Forecasts

Memorial Day weekend: wet in East, Southeast; mostly dry in the West

2 hours ago

 More Stories

Featured Stories

Astronomy

SpaceX poised for first Starship flight test of 2026 following delays

2 days ago

Recreation

It’s nearly Memorial Day, but this national park just had a snowstorm

21 hours ago

Weather News

Help name the first bald eagles born in Chicago in over 100 years

21 minutes ago

Weather News

California gray wolf is spotted in Sequoia, marking historic return

1 day ago

Weather News

India scorched by heat wave, power demand driven to new record

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

...

...

...