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Weather Forecast for O'Fallon, Illinois

Traveling to O'Fallon, Illinois? Here is your 6-day weather forecast in the area. Whether it is a warm weather destinations or cold climate don’t forget to consider weather, while you pack your bags for this trip. Start your day when the sunrises at 12:55 PM and don’t miss the sunset at 10:40 PM. Today’s winds are traveling southwest at a speed of 4 MPH. The temperature feels like 28 with a humidity level of 61. Cloud coverage is 36 percent with 14.4 percent visibility. Today’s UV index is 0 make sure to prepare properly. Make sure to plan your travel itinerary to match your travel weather forecast to make the most of your vacation with Reservations.com.


Fahrenheit / Celsius
Friday 11/28
Scattered clouds

Friday 11/28 Weather forecast for O'Fallon, Illinois, Scattered clouds
32°F
High: 38°F
Low: 30°F
Precipitation: 0%
Today 11/29
Heavy snow

Saturday 11/29 Weather forecast for O'Fallon, Illinois, Heavy snow
35°F
High: 41°F
Low: 26°F
Precipitation: 95%
Sunday 11/30
Light snow

Sunday 11/30 Weather forecast for O'Fallon, Illinois, Light snow
28°F
High: 31°F
Low: 21°F
Precipitation: 55%
Monday 12/1
Light snow

Monday 12/1 Weather forecast for O'Fallon, Illinois, Light snow
26°F
High: 31°F
Low: 23°F
Precipitation: 90%
Tuesday 12/2
Light snow

Tuesday 12/2 Weather forecast for O'Fallon, Illinois, Light snow
26°F
High: 33°F
Low: 19°F
Precipitation: 90%
Wednesday 12/3
Broken clouds

Wednesday 12/3 Weather forecast for O'Fallon, Illinois, Broken clouds
30°F
High: 41°F
Low: 28°F
Precipitation: 0%

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