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O'Fallon, MO

71°F
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O'Fallon

Missouri

71°
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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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1 AM

70°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

WindS 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity76%

Indoor Humidity76% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Rain0.05 in

Visibility5 mi

Cloud Ceiling4000 ft

2 AM

70°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

WindS 7 mph

Air QualityFair

Wind Gusts7 mph

Humidity76%

Indoor Humidity76% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling28200 ft

3 AM

69°
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

WindSSW 7 mph

Air QualityFair

Wind Gusts7 mph

Humidity76%

Indoor Humidity76% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling26300 ft

4 AM

68°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 37%
Chevron down
Cloudy

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity78%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling24500 ft

5 AM

67°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 43%
Chevron down
Cloudy

WindSSW 7 mph

Air QualityFair

Wind Gusts7 mph

Humidity82%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling21200 ft

6 AM

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

RealFeel Shade™64°

WindSSW 7 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts8 mph

Humidity87%

Indoor Humidity81% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling17900 ft

7 AM

67°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

RealFeel Shade™62°

WindS 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts8 mph

Humidity87%

Indoor Humidity84% (Humid)

Dew Point63° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.05 in

Visibility5 mi

Cloud Ceiling4000 ft

8 AM

68°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 56%
Chevron down
Thunderstorms

RealFeel Shade™64°

WindSSW 7 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts8 mph

Humidity85%

Indoor Humidity85% (Humid)

Dew Point64° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

9 AM

70°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™70°

WindSSW 6 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts8 mph

Humidity82%

Indoor Humidity82% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling4000 ft

10 AM

72°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™72°

WindSW 6 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts10 mph

Humidity79%

Indoor Humidity79% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling7000 ft

11 AM

73°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™73°

WindSSW 7 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts12 mph

Humidity76%

Indoor Humidity76% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6600 ft

12 PM

74°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™74°

WindSE 7 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts13 mph

Humidity73%

Indoor Humidity73% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6100 ft

1 PM

73°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 64%
Chevron down
Thunderstorms

RealFeel Shade™69°

WindSE 7 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts14 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

2 PM

75°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

RealFeel Shade™75°

WindSSE 8 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts12 mph

Humidity75%

Indoor Humidity75% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6100 ft

3 PM

77°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™76°

WindS 9 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts10 mph

Humidity68%

Indoor Humidity68% (Humid)

Dew Point66° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6600 ft

4 PM

80°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

RealFeel Shade™78°

Heat Index80°

WindS 9 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts10 mph

Humidity59%

Indoor Humidity59% (Humid)

Dew Point64° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling7100 ft

5 PM

75°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 73%
Chevron down
Thunderstorms

RealFeel Shade™74°

WindS 8 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts10 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

6 PM

75°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™77°

WindS 8 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts9 mph

Humidity80%

Indoor Humidity80% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling4000 ft

7 PM

74°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 73%
Chevron down
Thunderstorms

RealFeel Shade™73°

WindS 7 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts8 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

8 PM

74°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Intermittent clouds

RealFeel Shade™73°

WindS 7 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts8 mph

Humidity75%

Indoor Humidity75% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

73°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Intermittent clouds

WindSSE 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity77%

Indoor Humidity77% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

71°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Intermittent clouds

WindSSE 6 mph

Air QualityFair

Wind Gusts10 mph

Humidity77%

Indoor Humidity77% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

70°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 64%
Chevron down
Mostly cloudy w/ t-storms

WindSSE 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity78%

Indoor Humidity78% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Rain0.05 in

Visibility5 mi

Cloud Ceiling4000 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 70° with a RealFeel® of 65°, thunderstorms with a 51% 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:

  • St. Charles, MO
  • St. Louis, MO
  • St. Peters, MO
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