Sullivan, MI enjoys a humid continental climate, with hot summers and cold winters. During the summer months temperatures can reach up to 80-90 degrees Fahrenheit with high humidity levels. In winter, temperatures drop significantly and low temperatures can reach below zero degrees Fahrenheit. The area receives an average of 35 inches of precipitation annually, with significant snowfall during the colder months. Winters are often icy cold due to the lake effect from Lake Michigan and wind chill factor is usually taken into consideration when dressing for cold weather.
Sullivan, Michigan gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sullivan averages 75 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 163 sunny days per year in Sullivan. The US average is 205 sunny days.
Sullivan gets some kind of precipitation, on average, 123 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 80 degrees
Winter Low: the January low is 19
Rain: averages 36 inches of rain a year
Snow: averages 75 inches of snow a year