St. Charles, IA has a humid continental climate with warm summers and cold winters. Average summer temperatures are typically around 75 degrees Fahrenheit, while during the winter months the temperature usually drops to around 20 degrees Fahrenheit. Rainfall is also common throughout the year, with an average of 38 inches of precipitation annually. Snowfall can occur in St. Charles from late November through March, with an average of 30 inches per snow season. The city enjoys four distinct seasons throughout the year, making it a great place to visit or live for those who appreciate changing weather conditions.
St. Charles, Iowa gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
St. Charles averages 28 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 St. Charles. The US average is 205 sunny days.
St. Charles gets some kind of precipitation, on average, 95 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 85 degrees
Winter Low: the January low is 11
Rain: averages 36 inches of rain a year
Snow: averages 28 inches of snow a year