O Fallon, IL Weather - Find Local Weather

World > North America > United States > Illinois

O Fallon, Illinois Weather

Lat: 38.44N, Lon: 89.99W
Wx Zone: ILZ101 ICAO Used: KBLV
Warning FLW WEATHER ALERT - (More Info. Click Here) Warning
Issued 240 PM EST Mon Nov 12 2018 Valid Tue Nov 13 2018 - Thu Nov 15 2018 ...Extremely Critical fire weather conditions continue in California as well as Air Quality Alerts... ...There is a slight risk of severe thunderstorms over parts of the Central Gulf Coast and parts of the Southeast Coast... ...Heavy rain possible over parts of the Southeast/Eastern Gulf Coast into parts of the Mid-Atlantic region... ...Snow possible over parts of Northern New England and lake effect sn...

Current Conditions

Overcast, 0004 black low cloud
Updated: 11/13 12:40 am
Feels Like:
Humidity: 80%
NNW 17 mph
30.36 in
10 mi

Sun/Moon Info.

Cloud Cover: 100%
UV Index: 2
Sunrise: 06:39 AM
Sunset: 04:48 PM
Moonrise: 11:50 AM
Moonset: 09:55 PM
Convert °F to °C

Enter a Temp.
Update is local observation time. What time is it in O Fallon? 12:40 AM Tuesday, November 13, 2018

We don't get much of a spring or fall to speak of. Up here, for ten months a year, the weather has teeth in it. ―Marcel Theroux

Illinois Weather Map

Illinois Weather Forecast Maps

O Fallon Weather Forecast

7 day Outlook

O Fallon, IL Weather Forecast Dated: 1151 PM CST Mon Nov 12 2018
Includes the Counties: Saint Clair County Il, Including The Cities Of Belleville And Cahokia
Chance Of Snow
Rest Of Tonight... Colder. Cloudy with a 30 percent chance of snow. Low in the lower 20s. North wind 10 to 15 mph.
Mostly Sunny
Tuesday... Mostly sunny. High around 30. Northwest wind 10 to 15 mph.
Tue Night
Tuesday Night... Clear. Low around 19. Light wind.
Mostly Sunny
Wednesday... Mostly sunny. High in the upper 30s. Light wind.
Wed Night
Chance Of Snow
Wednesday Night... Partly cloudy in the evening, then mostly cloudy with a 40 percent chance of snow after midnight. Low in the mid 20s. Light wind.
Thursday... Snow likely. Snow accumulation around 3 inches. High in the mid 30s. Chance of snow 70 percent.
Thu Night
Chance Of Snow
Thursday Night... Partly cloudy. A 30 percent chance of snow in the evening. Low in the upper 20s.
Mostly Sunny
Friday... Mostly sunny. High in the mid 40s.
Fri Night
Partly Cloudy
Friday Night... Partly cloudy. Low in the upper 20s. High in the lower 40s.
Partly Cloudy
Saturday... Partly cloudy. Low in the upper 20s. High in the lower 40s.
Wintry Mix
Sunday... Partly cloudy with a 20 percent chance of rain, possibly mixed with snow. High in the upper 30s. Temperature steady or slowly falling in the afternoon.
Sun Night
Mostly Clear
Sunday Night... Mostly clear. Low in the lower 20s. High in the mid 40s.