Chicago has a humid continental climate and experiences four different seasons. The peak season in Chicago is between June and August, during which it is warm and glows with festivities. But if you want to skip the crowd and want to experience Chicago all alone, try visiting during the months of November and March. The climate during that time is freezing but you will get good deals, as the prices go down.
Spring (March - May): Spring is one of the mild seasons in Chicago with low humidity. The flowers start to bloom during this season.
Summers (June - September): Summers in Chicago are hot and humid and the average temperature during this time will be around 24.3-degree Celsius.
Autumn (October - November): Autumn too is a mild season in Chicago as the temperature level drops in a bit signifying the forthcoming of the fall.
Winters (December - February): Winters in Chicago are really extreme with cold weather and are quite snowy
During the Spring and the Summer, there is a huge possibility for loud thunderstorms which might lead to heavy rains. And so the best time to visit Chicago is during the months of April and October. Also, keep in your sweaters handy when you visit Chicago.