Ontonagon, MI County has a humid continental climate with hot summers and cold winters. During the summer months, temperatures average in the low 80s, while in winter, temperatures can drop to below 0°F. Precipitation is fairly evenly distributed throughout the year with most of it falling as snow in winter. Winters tend to be long and cold with heavy snowfall due to the lake effect from Lake Superior. Summers are usually warm and sunny with occasional thunderstorms.
Ontonagon County, Michigan gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Ontonagon County averages 180 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 185 sunny days per year in Ontonagon County. The US average is 205 sunny days.
Ontonagon County gets some kind of precipitation, on average, 155 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 77 degrees
Winter Low: the January low is 4
Rain: averages 36 inches of rain a year
Snow: averages 180 inches of snow a year