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150 million in South, East face major snow and ice storm. Get the forecast. Chevron right

O'Fallon, MO

36°F
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O'Fallon

Missouri

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

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Today WinterCast

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WinterCast

1 - 3 in

Sat, 1/24, 8:00 AM - Sun, 1/25, 12:00 PM

Snow

8 PM

31°
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 cloudy

WindS 15 mph

Air QualityPoor

Wind Gusts20 mph

Humidity40%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling22100 ft

9 PM

32°
RealFeel® 18°
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 cloudy

WindS 15 mph

Air QualityPoor

Wind Gusts18 mph

Humidity37%

Indoor Humidity23% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover89%

Visibility10 mi

Cloud Ceiling18200 ft

10 PM

32°
RealFeel® 18°
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
Cloudy

WindS 15 mph

Air QualityPoor

Wind Gusts18 mph

Humidity38%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling18200 ft

11 PM

32°
RealFeel® 19°
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
Cloudy

WindS 15 mph

Air QualityPoor

Wind Gusts17 mph

Humidity39%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling18200 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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