Millbrook, IL has a humid continental climate with cold, snowy winters and hot, humid summers. Average winter temperatures range from the low 20s to the mid-30s, while summer temperatures range from the mid-50s to low 80s. Precipitation is fairly evenly distributed throughout the year with average annual snowfall of around 30 inches. The area receives abundant sunshine in both winter and summer months, making it an ideal spot for outdoor activities.
Millbrook, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Millbrook averages 27 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 189 sunny days per year in Millbrook. The US average is 205 sunny days.
Millbrook gets some kind of precipitation, on average, 119 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 14
Rain: averages 38 inches of rain a year
Snow: averages 27 inches of snow a year