Wentzville, MO has a humid continental climate with hot summers and cold winters. The average annual temperature is 55°F (13°C), with an average high in July of 88°F (31°C) and an average low in January of 23°F (-5°C). Precipitation is moderate throughout the year, with an average of 44 inches (110 cm) per year. Snowfall can be heavy during the winter months, but typically melts quickly after hitting the ground. Generally, Wentzville experiences warm and pleasant weather for most of the year.
Wentzville, Missouri gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Wentzville averages 13 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 205 sunny days per year in Wentzville. The US average is 205 sunny days.
Wentzville gets some kind of precipitation, on average, 110 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 88 degrees
Winter Low: the January low is 21
Rain: averages 43 inches of rain a year
Snow: averages 13 inches of snow a year