Weather forecast for 10 days
O'Fallon, IL

On Sunday, in O'Fallon, bright and sunny weather is expected.
Daytime will witness a high of a chilly 42.8°F (6°C), slightly diverging from the forecasted night low of a cold 33.8°F (1°C).
The highest temperature today will be in line with the average maximum temperature in December.
Sunrise will be at 7:12 am and sunset at 4:44 pm; the daylight will last for 9h and 31min.

For the next ten days, a combination of cloudy, rainy and sunny weather is forecasted.
Rainfall is expected on Tuesday through next Sunday.
Temperature variation will be substantial in the upcoming period. The highest temperature will range between 42.8°F (6°C) and 60.8°F (16°C), while the lowest nightly temperature fluctuation will be also substantial, as the minimum temperature will vary between 33.8°F (1°C) and 50°F (10°C).
With the highest temperature of 60.8°F (16°C), Saturday will be the warmest day; today is the coldest day, with a maximum temperature of 42.8°F (6°C).