Grass Lake, MI has a humid continental climate characterized by warm summers and cold winters. During the summer months, temperatures average in the mid-70s Fahrenheit with high humidity and occasional thunderstorms. In the winter, temperatures average in the upper 20s and low 30s, with snowfall accumulating from November to March. Overall, Grass Lake's climate is milder than other areas of Michigan due to its proximity to Lake Michigan.
Grass Lake (zip 49240), Michigan gets 33 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grass Lake (zip 49240) averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 174 sunny days per year in Grass Lake (zip 49240). The US average is 205 sunny days.
Grass Lake (zip 49240) gets some kind of precipitation, on average, 133 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 82 degrees
Winter Low: the January low is 16
Rain: averages 33 inches of rain a year
Snow: averages 41 inches of snow a year