O'Fallon, MO Weather Forecast

Red Flag Warning

Today's Weather

Fri, Feb 27

Very warm with plenty of sunshine Hi: 75°

Tonight: Clear Lo: 39°

Current Weather

6:17 AM

Looking Ahead

Rain from late Sunday afternoon until late Sunday night, when it will change to snow and accumulate a coating to an inch before ending early Monday morning

WinterCast®

Late Sunday Night - Monday Morning

Snow

Lasting 8 hours

Ice

Lasting 9 hours

O'Fallon Weather Radar

Static Radar Temporarily Unavailable

Thank you for your patience as we work to get everything up and running again.

Refresh Page

Clouds

Temperature

Hourly Weather

10-Day Weather Forecast

Today

2/27

75° 39°

Sunny and very warm

Night: Clear

Sat

2/28

66° 25°

An afternoon shower

Mostly cloudy and colder

49%

Sun

3/1

45° 34°

Cooler; a little p.m. rain

Rain mixing with snow, sleet

64%

Mon

3/2

46° 40°

A little wintry mix

Cloudy with a few showers

61%

Tue

3/3

52° 42°

An a.m. shower or two; cloudy

Cloudy with showers

70%

Wed

3/4

58° 52°

A shower and thunderstorm

Rain and a thunderstorm late

97%

Thu

3/5

68° 57°

Cloudy, a shower and t-storm

Early showers, then t-storms

60%

Fri

3/6

74° 57°

Morning thunderstorms

Some clouds, a shower late

72%

Sat

3/7

67° 55°

Rain and a thunderstorm

Mostly cloudy with downpours

73%

Sun

3/8

74° 60°

A little afternoon rain

Low clouds

55%

Sun & Moon

11 hrs 16 mins

Rise 6:36 AM

Set 5:52 PM

Waxing Gibbous

Rise 1:43 PM

Set 5:05 AM

Air Quality

Air Quality Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.