Northbrook, IL has a humid continental climate, meaning it experiences hot summers and cold winters. During the summer months, temperatures average in the high 80s to low 90s Fahrenheit with occasional days in the mid to high 90s. Winters are quite cold with an average temperature of around 25F and lows reaching the single digits occasionally. The city also receives moderate precipitation throughout the year, with more rain occurring during the late spring and early summer months. Snow is common in Northbrook during winter months, though usually not heavy snowfall events. Overall, Northbrook has a comfortable climate that is enjoyable throughout most of the year.
Northbrook, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Northbrook averages 36 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Northbrook. The US average is 205 sunny days.
Northbrook gets some kind of precipitation, on average, 125 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 17
Rain: averages 36 inches of rain a year
Snow: averages 36 inches of snow a year