Weather forecast for 10 days
O'Fallon, MO

On Saturday, in O'Fallon, isolated thunderstorms are anticipated.
With a low probability, light precipitation is expected. Temperature span will be from a high of a moderately hot 84.2°F (29°C) to a low of an agreeable 68°F (20°C).
On Saturday, it will be hotter and the maximum temperature of 84.2°F (29°C) will be more in line with May's average highest temperature of 74.5°F (23.6°C) than the average highest temperature of 65.3°F (18.5°C) in April.
Sunrise will be at 6:08 am and sunset at 7:51 pm; the daylight will last for 13h and 43min.

On Sunday, in O'Fallon, scattered thunderstorms and rainy weather are expected.
Increased precipitation is forecasted. The temperature will fluctuate from a high of a warm 78.8°F (26°C) to a low of an enjoyable 60.8°F (16°C).
It will be warmer, and the highest temperature will be more in line with May's average maximum of 74.5°F (23.6°C) than April's of 65.3°F (18.5°C).
Sunrise will be at 6:07 am and sunset at 7:52 pm; the daylight will last for 13h and 45min.

The weather will be unstable for the next ten days, and a mix of rainy, stormy, sunny and cloudy weather is anticipated.
Rainfall is anticipated on Tuesday, Thursday through next Thursday. With increased precipitation of 0.83" (21mm), most rainfall is expected on Sunday.
Temperature fluctuation will be considerable in the upcoming period. The highest temperature will range between 64.4°F (18°C) and 84.2°F (29°C), while the lowest nightly temperature variation will be also considerable, as the lowest temperature will range between 42.8°F (6°C) and 68°F (20°C).
The hottest day will be Saturday, with a maximum of 84.2°F (29°C); today is the coldest day, with a maximum temperature of 64.4°F (18°C).