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O'Fallon, IL

69°F
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O'Fallon

Illinois

69°
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O'Fallon, IL Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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1 AM

67°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 11%
Chevron down
Cloudy

WindSSW 12 mph

Air QualityFair

Wind Gusts16 mph

Humidity89%

Indoor Humidity87% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling14700 ft

2 AM

66°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindSSW 15 mph

Air QualityFair

Wind Gusts22 mph

Humidity93%

Indoor Humidity85% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling12100 ft

3 AM

64°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 65%
Chevron down
Thunderstorms

WindSSW 16 mph

Air QualityFair

Wind Gusts22 mph

Humidity99%

Indoor Humidity86% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Rain0.20 in

Visibility3 mi

Cloud Ceiling2000 ft

4 AM

63°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindSSW 16 mph

Air QualityFair

Wind Gusts23 mph

Humidity100%

Indoor Humidity83% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

5 AM

61°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindSSW 16 mph

Air QualityFair

Wind Gusts20 mph

Humidity100%

Indoor Humidity79% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling5900 ft

6 AM

60°
RealFeel® 50°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 60%
Chevron down
Thunderstorms

WindSSW 15 mph

Air QualityFair

Wind Gusts18 mph

Humidity100%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Rain0.20 in

Visibility3 mi

Cloud Ceiling2000 ft

7 AM

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

WindSSW 14 mph

Air QualityFair

Wind Gusts17 mph

Humidity100%

Indoor Humidity73% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3700 ft

8 AM

60°
RealFeel® 54°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™54°

WindSW 17 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts21 mph

Humidity100%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3000 ft

9 AM

62°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 71%
Chevron down
Rain

RealFeel Shade™53°

WindWSW 20 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts24 mph

Humidity97%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.07 in

Visibility5 mi

Cloud Ceiling2300 ft

10 AM

63°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 71%
Chevron down
Rain

RealFeel Shade™55°

WindWSW 22 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts29 mph

Humidity88%

Indoor Humidity75% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.07 in

Visibility5 mi

Cloud Ceiling1600 ft

11 AM

65°
RealFeel® 57°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 69%
Chevron down
Rain

RealFeel Shade™57°

WindW 22 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts29 mph

Humidity79%

Indoor Humidity71% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.07 in

Visibility5 mi

Cloud Ceiling1600 ft

12 PM

58°
RealFeel® 51°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™50°

WindWNW 21 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts25 mph

Humidity84%

Indoor Humidity58% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling1600 ft

1 PM

54°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 69%
Chevron down
Rain

RealFeel Shade™43°

WindNW 21 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts31 mph

Humidity79%

Indoor Humidity49% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.07 in

Visibility5 mi

Cloud Ceiling1600 ft

2 PM

51°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 25%
Chevron down
Cloudy

RealFeel Shade™41°

WindNW 20 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts32 mph

Humidity77%

Indoor Humidity42% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling1900 ft

3 PM

49°
RealFeel® 38°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™38°

WindNW 21 mph

Air QualityExcellent

Max UV Index0.9 (Low)

Wind Gusts35 mph

Humidity76%

Indoor Humidity38% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2200 ft

4 PM

46°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™35°

WindNW 21 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts38 mph

Humidity76%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

5 PM

46°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™34°

WindNW 21 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts39 mph

Humidity71%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling11600 ft

6 PM

45°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™34°

WindNW 20 mph

Air QualityExcellent

Max UV Index0.3 (Low)

Wind Gusts37 mph

Humidity68%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling20800 ft

7 PM

44°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 13%
Chevron down
Cloudy

RealFeel Shade™31°

WindNNW 18 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts36 mph

Humidity67%

Indoor Humidity42% (Slightly Dry)

Dew Point34° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

42°
RealFeel® 27°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNNW 23 mph

Air QualityExcellent

Wind Gusts44 mph

Humidity69%

Indoor Humidity41% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

40°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNNW 21 mph

Air QualityExcellent

Wind Gusts40 mph

Humidity71%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

41°
RealFeel® 27°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNNW 20 mph

Air QualityExcellent

Wind Gusts37 mph

Humidity67%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

40°
RealFeel® 25°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNNW 20 mph

Air QualityExcellent

Wind Gusts37 mph

Humidity68%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover7%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near O'Fallon:

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