61046 Lanark, IL has a humid continental climate with hot, humid summers and cold winters. Winters in this area are characterized by long periods of snowfall that can last up to eight months of the year. During summer months, temperatures are usually quite warm and range from the mid-70s to low 80s with occasional days reaching near 90 degrees Fahrenheit. Rainfall is fairly regular throughout the year with light rain occurring most frequently during spring and fall while thunderstorms occur more often during summertime. Humidity levels are high throughout the year but can be especially oppressive during the summer months.
Lanark (zip 61046), Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Lanark (zip 61046) averages 31 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Lanark (zip 61046). The US average is 205 sunny days.
Lanark (zip 61046) gets some kind of precipitation, on average, 113 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 84 degrees
Winter Low: the January low is 12
Rain: averages 39 inches of rain a year
Snow: averages 31 inches of snow a year