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Next cold wave could set stage for snowstorm in East. Get the forecast. Chevron right

O'Fallon, MO

51°F
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O'Fallon, MO Weather
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1 AM

47°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Intermittent clouds

WindSSE 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity74%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover62%

Visibility10 mi

Cloud Ceiling26200 ft

2 AM

46°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Intermittent clouds

WindSSE 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity79%

Indoor Humidity35% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover68%

Visibility10 mi

Cloud Ceiling22400 ft

3 AM

46°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Intermittent clouds

WindSE 8 mph

Air QualityFair

Wind Gusts9 mph

Humidity78%

Indoor Humidity35% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover73%

Visibility10 mi

Cloud Ceiling18600 ft

4 AM

47°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindSE 8 mph

Air QualityFair

Wind Gusts9 mph

Humidity80%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling17000 ft

5 AM

47°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindSSE 8 mph

Air QualityFair

Wind Gusts10 mph

Humidity82%

Indoor Humidity38% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling15500 ft

6 AM

48°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 5%
Chevron down
Cloudy

WindSSE 9 mph

Air QualityFair

Wind Gusts10 mph

Humidity84%

Indoor Humidity40% (Ideal Humidity)

Dew Point43° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling14000 ft

7 AM

49°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindSSE 8 mph

Air QualityFair

Wind Gusts10 mph

Humidity86%

Indoor Humidity43% (Ideal Humidity)

Dew Point45° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling12600 ft

8 AM

50°
RealFeel® 46°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™46°

WindSSE 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts9 mph

Humidity87%

Indoor Humidity45% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling11300 ft

9 AM

51°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™48°

WindS 8 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts9 mph

Humidity87%

Indoor Humidity48% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9900 ft

10 AM

53°
RealFeel® 50°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™50°

WindSSE 9 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts12 mph

Humidity85%

Indoor Humidity50% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling7800 ft

11 AM

55°
RealFeel® 51°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™51°

WindSE 12 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts15 mph

Humidity84%

Indoor Humidity54% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling5700 ft

12 PM

57°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 11%
Chevron down
Cloudy

RealFeel Shade™53°

WindSE 13 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts18 mph

Humidity83%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3700 ft

1 PM

59°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™53°

WindSSE 17 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts31 mph

Humidity81%

Indoor Humidity60% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling3100 ft

2 PM

61°
RealFeel® 52°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 74%
Chevron down
Thunderstorms

RealFeel Shade™52°

WindSSE 18 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts35 mph

Humidity81%

Indoor Humidity64% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Rain0.09 in

Visibility5 mi

Cloud Ceiling2500 ft

3 PM

63°
RealFeel® 54°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 74%
Chevron down
Thunderstorms

RealFeel Shade™54°

WindS 20 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts37 mph

Humidity79%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Rain0.09 in

Visibility5 mi

Cloud Ceiling2000 ft

4 PM

64°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 68%
Chevron down
Thunderstorms

RealFeel Shade™55°

WindS 20 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts37 mph

Humidity79%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Rain0.09 in

Visibility5 mi

Cloud Ceiling1900 ft

5 PM

64°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindS 20 mph

Air QualityFair

Wind Gusts36 mph

Humidity80%

Indoor Humidity69% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling1800 ft

6 PM

65°
RealFeel® 57°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 68%
Chevron down
Thunderstorms

WindS 18 mph

Air QualityFair

Wind Gusts36 mph

Humidity79%

Indoor Humidity71% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Rain0.09 in

Visibility5 mi

Cloud Ceiling1600 ft

7 PM

65°
RealFeel® 57°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 68%
Chevron down
Rain

WindSSW 18 mph

Air QualityFair

Wind Gusts35 mph

Humidity79%

Indoor Humidity71% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Rain0.09 in

Visibility5 mi

Cloud Ceiling1800 ft

8 PM

65°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindSSW 18 mph

Air QualityFair

Wind Gusts33 mph

Humidity79%

Indoor Humidity71% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling1900 ft

9 PM

66°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 68%
Chevron down
Rain

WindSSW 17 mph

Air QualityFair

Wind Gusts30 mph

Humidity75%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Rain0.09 in

Visibility5 mi

Cloud Ceiling2000 ft

10 PM

65°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindSSW 17 mph

Air QualityFair

Wind Gusts27 mph

Humidity78%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling4000 ft

11 PM

64°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 72%
Chevron down
Rain

WindSSW 17 mph

Air QualityFair

Wind Gusts24 mph

Humidity79%

Indoor Humidity69% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.09 in

Visibility5 mi

Cloud Ceiling4000 ft

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World North America United States Missouri O'Fallon

Weather Near O'Fallon:

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