O Fallon weather 5 day forecast Illinois IL, 5 Days Weather

O Fallon 5 day weather forecast

Date	Weather	Max.	Min
Fri 10/9	Very warm with the temperature approaching the record high of 33 set in 1980 with plenty of sunshine	90°F	54°F
Sat 10/10	Mostly cloudy and very warm	82°F	59°F
Sun 10/11	Remaining warm with clouds giving way to sun	84°F	59°F
Mon 10/12	Hot with the temperature breaking the record high of 31 set in 2024 with plenty of sunshine; caution advised if doing strenuous activities outside	93°F	63°F
Tue 10/13	Very warm with the temperature tying the record high from 1989 with more sun than clouds	90°F	61°F

Weather for the next 5 days in O Fallon, Illinois state, USA

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O Fallon Weather Forecast 5 days

On this page we provide the most accurate results for the weather in O Fallon. You will find the most important information about the weather in O Fallon on this page. You can use the links for today's weather, tomorrow's weather and 15-day weather. What's the 15 day forecast for O Fallon. We have given you the most accurate information about 5 day forecast O Fallon, 5 Days Weather O Fallon, O Fallon 15-day forecast, O Fallon weather 15-day forecast, O Fallon weather 15-day, O Fallon next 15-day forecast, O Fallon weather 15-day. You can find the most accurate forecasts for O Fallon here. You can find accurate O Fallon weather forecasts on the 15-day, 20-day and 90-day pages. You can also access today's weather and tomorrow's weather forecast. Weather forecasts for today and tomorrow are shown in detail every hour. O Fallon weather details; You can access it by clicking the (+) button on the right.