Lake Petersburg, IL has a comfortable climate year round. The summers are usually mild with temperatures ranging from the mid 70s to the low 80s during the day. Nights are often cool and comfortable in the summer, providing a nice respite from the heat of the day. In the winter months, temperatures usually range from the upper 20s to mid 40s, making it an ideal place for outdoor activities like skiing or snowshoeing. Snowfall is moderate in this area, but can be heavy at times depending on whether or not a lake-effect storm is present. Overall Lake Petersburg provides a pleasant climate that appeals to both locals and visitors alike.
Lake Petersburg, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Lake Petersburg averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Lake Petersburg. The US average is 205 sunny days.
Lake Petersburg gets some kind of precipitation, on average, 102 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 18
Rain: averages 38 inches of rain a year
Snow: averages 17 inches of snow a year