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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 12:54 PM and don’t miss the sunset at 10:40 PM. Today’s winds are traveling northwest at a speed of 10 MPH. The temperature feels like 27 with a humidity level of 61. Cloud coverage is 17 percent with 14.9 percent visibility. Today’s UV index is 2 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
Thursday 11/27
Few clouds

Thursday 11/27 Weather forecast for O'Fallon, Illinois, Few clouds
34°F
High: 40°F
Low: 22°F
Precipitation: 0%
Today 11/28
Scattered clouds

Friday 11/28 Weather forecast for O'Fallon, Illinois, Scattered clouds
31°F
High: 39°F
Low: 31°F
Precipitation: 0%
Saturday 11/29
Mix snow/rain

Saturday 11/29 Weather forecast for O'Fallon, Illinois, Mix snow/rain
35°F
High: 39°F
Low: 27°F
Precipitation: 95%
Sunday 11/30
Mix snow/rain

Sunday 11/30 Weather forecast for O'Fallon, Illinois, Mix snow/rain
28°F
High: 31°F
Low: 18°F
Precipitation: 85%
Monday 12/1
Light snow

Monday 12/1 Weather forecast for O'Fallon, Illinois, Light snow
23°F
High: 29°F
Low: 18°F
Precipitation: 55%
Tuesday 12/2
Light snow

Tuesday 12/2 Weather forecast for O'Fallon, Illinois, Light snow
25°F
High: 32°F
Low: 16°F
Precipitation: 85%

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