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O'Fallon, MO

76°F
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O'Fallon

Missouri

76°
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O'Fallon, MO Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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11 AM

76°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Thunderstorms

RealFeel Shade™72°

WindNW 8 mph

Air QualityFair

Max UV Index4.7 (Moderate)

Wind Gusts10 mph

Humidity51%

Indoor Humidity51% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover81%

Visibility10 mi

Cloud Ceiling27900 ft

12 PM

76°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Thunderstorms

RealFeel Shade™71°

WindNW 9 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts10 mph

Humidity55%

Indoor Humidity55% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover86%

Rain0.01 in

Visibility6 mi

Cloud Ceiling4000 ft

1 PM

75°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™72°

WindNW 9 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts13 mph

Humidity57%

Indoor Humidity57% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling14700 ft

2 PM

74°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

RealFeel Shade™68°

WindNW 9 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts14 mph

Humidity60%

Indoor Humidity60% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover87%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

3 PM

75°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

RealFeel Shade™72°

WindNW 9 mph

Air QualityFair

Max UV Index5.2 (Moderate)

Wind Gusts15 mph

Humidity59%

Indoor Humidity59% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling24900 ft

4 PM

74°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Intermittent clouds

RealFeel Shade™71°

WindNW 8 mph

Air QualityFair

Max UV Index4.6 (Moderate)

Wind Gusts16 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

74°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 33%
Chevron down
Partly sunny

RealFeel Shade™71°

WindNW 8 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts14 mph

Humidity60%

Indoor Humidity60% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

74°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 33%
Chevron down
Mostly sunny

RealFeel Shade™71°

WindNW 7 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts10 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover29%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

73°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 39%
Chevron down
Mostly sunny

RealFeel Shade™70°

WindNW 7 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts8 mph

Humidity64%

Indoor Humidity64% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover19%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

69°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Partly sunny w/ showers

RealFeel Shade™65°

WindNW 7 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts7 mph

Humidity69%

Indoor Humidity69% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover26%

Rain0.02 in

Visibility6 mi

Cloud Ceiling30000 ft

9 PM

66°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly clear

WindWNW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity79%

Indoor Humidity74% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

63°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Mostly clear

WindWNW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity88%

Indoor Humidity74% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

60°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 34%
Chevron down
Mostly clear

WindWNW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity97%

Indoor Humidity73% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 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 76° with a RealFeel® of 78°, thunderstorms with a 40% 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.

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Weather Near O'Fallon:

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  • St. Louis, MO
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