Vandalia, MO has a humid continental climate with hot summers and cold winters. Average annual temperatures range from a low of 33 degrees Fahrenheit in January to a high of 80 degrees Fahrenheit in July. The average rainfall for the area is 38 inches per year, with the majority of it falling between April and August. Snowfall is light, averaging around 18 inches per year. The region tends to experience frequent thunderstorms throughout the year, especially during summer months.
Vandalia, Missouri gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Vandalia averages 16 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 194 sunny days per year in Vandalia. The US average is 205 sunny days.
Vandalia gets some kind of precipitation, on average, 100 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 87 degrees
Winter Low: the January low is 18
Rain: averages 41 inches of rain a year
Snow: averages 16 inches of snow a year