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O'Fallon, MO

48°F
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O'Fallon

Missouri

48°
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O'Fallon, MO Weather
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Winter Center

Today

WinterCast Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Today's Weather

Fri, Mar 13

Windy with times of clouds and sun Hi: 59°

Tonight: Partly cloudy Lo: 34°

Current Weather

12:33 AM

48°F
RealFeel® 46°
Mostly cloudy More Details
Wind S 6 mph
Wind Gusts 14 mph
Air Quality Fair

Looking Ahead

Thunderstorms Sunday afternoon

WinterCast®

Late Sun Night

Snow

Lasting 2 hours

O'Fallon Weather Radar

O'Fallon Weather Radar
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Clouds
Temperature

Hourly Weather

1 AM 45°
rain drop 42%
2 AM 46°
rain drop 38%
3 AM 46°
rain drop 34%
4 AM 46°
rain drop 34%
5 AM 46°
rain drop 34%
6 AM 46°
rain drop 34%
7 AM 47°
rain drop 22%
8 AM 47°
rain drop 0%
9 AM 49°
rain drop 0%
10 AM 52°
rain drop 0%
11 AM 54°
rain drop 0%
12 PM 56°
rain drop 0%

10-Day Weather Forecast

Today

3/13

59° 34°

Windy with periods of sun

Night: Partly cloudy

3%

Sat

3/14

63° 56°

Some sun; breezy in the p.m.

Cloudy; breezy late

1%

Sun

3/15

65° 18°

Showers and a heavier t-storm

Icy winds

77%

Mon

3/16

30° 14°

Very windy; very cold

Frigid; breezy in the evening

42%

Tue

3/17

41° 33°

Cold with partial sunshine

Becoming cloudy

9%

Wed

3/18

59° 35°

Clouds and sun

Mainly cloudy

18%

Thu

3/19

72° 46°

Warmer with plenty of sun

Partly cloudy

1%

Fri

3/20

75° 47°

Very warm with high clouds

Partly cloudy

0%

Sat

3/21

70° 46°

Mostly sunny

Mainly clear

0%

Sun

3/22

65° 46°

Mostly sunny

Mainly clear

1%

Sun & Moon

11 hrs 50 mins
Rise 7:18 AM
Set 7:08 PM
Waning Crescent
Rise 4:21 AM
Set 1:31 PM

Air Quality

See More
Air Quality Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Allergy Outlook

See All
Tree Pollen Moderate Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander High Data is not supported in this location

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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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