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O'Fallon, MO

67°F
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O'Fallon

Missouri

67°
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O'Fallon, MO Weather
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7 PM

65°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 2%
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Intermittent clouds

RealFeel Shade™63°

WindNE 9 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts17 mph

Humidity77%

Indoor Humidity69% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling2400 ft

8 PM

65°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 3%
Chevron down
Cloudy

RealFeel Shade™62°

WindENE 9 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts15 mph

Humidity74%

Indoor Humidity67% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2400 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

WindENE 8 mph

Air QualityFair

Wind Gusts14 mph

Humidity74%

Indoor Humidity64% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

10 PM

63°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 3%
Chevron down
Cloudy

WindENE 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity76%

Indoor Humidity64% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

11 PM

62°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 5%
Chevron down
Cloudy

WindENE 7 mph

Air QualityFair

Wind Gusts10 mph

Humidity78%

Indoor Humidity64% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2600 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 65° with a RealFeel® of 63°, intermittent clouds with a 2% 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:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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