Weather forecast for 10 days
O'Fallon, MO

On Saturday, May 3, predominantly sunny weather will make for pleasant outdoor conditions.
Rain is not forecasted. The highest temperature will be a delightful 71.6°F, while the lowest predicted temperature is a frosty 46.4°F.
On Saturday, the forecast high deviates from April's norm and tracks May's average temperature of 74.5°F.
Sunrise will be at 6:00 am and sunset at 7:58 pm; the daylight will last for 13h and 58min.

On Sunday, May 4, a pleasant mix of sun and clouds will define the day.
Rain is not anticipated. Expected temperature values will span from a moderately hot 75.2°F down to a crisp 51.8°F.
The expected high is higher and consistent with May's normal of 74.5°F rather than April's.
Sunrise will be at 5:59 am and sunset at 7:59 pm; the daylight will last for 14h and 0min.

Models point to a combination of clear, dull and thunderstorm-prone weather is predicted.
Rain is predicted for Tuesday through Thursday and next Wednesday.
Noticeable swings in temperature are expected over the next several days. Maximum temperatures are forecasted between 71.6°F and 86°F, while the difference in minimum temperatures will be also substantial, as the minimum temperature is expected to range between 46.4°F and 69.8°F.
The hottest day is today, with a maximum temperature of 86°F; with a maximum temperature of 71.6°F, Wednesday through Saturday will be the coldest days in O'Fallon.
Taking the humidity into consideration, the maximum feel-like temperature may increase and range between 71.6°F and a blazing 93.2°F.