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Weather Forecast for O'Fallon, Missouri

Traveling to O'Fallon, Missouri? 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 11:49 AM and don’t miss the sunset at 11:57 PM. Today’s winds are traveling south at a speed of 4 MPH. The temperature feels like 73 with a humidity level of 93. Cloud coverage is 60 percent with 7.9 percent visibility. Today’s UV index is 5 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
Today 9/22
Moderate rain

Monday 9/22 Weather forecast for O'Fallon, Missouri, Moderate rain
71°F
High: 80°F
Low: 65°F
Precipitation: 70%
Tuesday 9/23
Thunderstorm with rain

Tuesday 9/23 Weather forecast for O'Fallon, Missouri, Thunderstorm with rain
72°F
High: 82°F
Low: 65°F
Precipitation: 75%
Wednesday 9/24
Thunderstorm with heavy rain
Wednesday 9/24 Weather forecast for O'Fallon, Missouri, Thunderstorm with heavy rain
69°F
High: 75°F
Low: 60°F
Precipitation: 90%
Thursday 9/25
Thunderstorm with rain

Thursday 9/25 Weather forecast for O'Fallon, Missouri, Thunderstorm with rain
67°F
High: 76°F
Low: 56°F
Precipitation: 75%
Friday 9/26
Few clouds

Friday 9/26 Weather forecast for O'Fallon, Missouri, Few clouds
67°F
High: 80°F
Low: 56°F
Precipitation: 45%
Saturday 9/27
Few clouds

Saturday 9/27 Weather forecast for O'Fallon, Missouri, Few clouds
65°F
High: 84°F
Low: 62°F
Precipitation: 0%

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