Grattan, MI has a typical Midwestern climate with warm to hot summers and cold winters. The area receives an average of 31 inches of rainfall each year, making it a relatively wet region. In the summertime temperatures range from the mid-70s to 90°F during the day while at night they cool off to the low 60s. During winter months temperatures drop to as low as -14°F on some occasions and stay in the 30s on average during the day, with lows in the teens overnight.
Grattan, Michigan gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grattan averages 65 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 160 sunny days per year in Grattan. The US average is 205 sunny days.
Grattan gets some kind of precipitation, on average, 128 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 83 degrees
Winter Low: the January low is 15
Rain: averages 36 inches of rain a year
Snow: averages 65 inches of snow a year