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O'Fallon, IL

32°F
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O'Fallon

Illinois

32°
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O'Fallon, IL Weather
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4 PM

32°
RealFeel® 17°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™15°

WindNW 20 mph

Air QualityExcellent

Max UV Index1.3 (Low)

Wind Gusts40 mph

Humidity36%

Indoor Humidity22% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover28%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

30°
RealFeel® 14°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™14°

WindNW 17 mph

Air QualityExcellent

Max UV Index0.4 (Low)

Wind Gusts37 mph

Humidity36%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover16%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

28°
RealFeel® 12°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 16 mph

Air QualityExcellent

Wind Gusts33 mph

Humidity40%

Indoor Humidity21% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

27°
RealFeel® 12°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 16 mph

Air QualityExcellent

Wind Gusts31 mph

Humidity42%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

25°
RealFeel® 9°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 15 mph

Air QualityExcellent

Wind Gusts30 mph

Humidity46%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

24°
RealFeel® 8°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 15 mph

Air QualityExcellent

Wind Gusts27 mph

Humidity48%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

23°
RealFeel® 6°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNW 15 mph

Air QualityExcellent

Wind Gusts24 mph

Humidity50%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

22°
RealFeel® 5°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNW 15 mph

Air QualityExcellent

Wind Gusts24 mph

Humidity52%

Indoor Humidity21% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

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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