Springtime in Chicago means blooming flowers, and is perhaps the city's wettest season.Thunderstorms are especially prevalent in the spring time. Winter conditions can persist well into April and occasionally into May. Temperatures can vary tremendously in the springtime, but they really start to warm up with May up to around 70°F (21°C).

As with anything related to nature, the above are general guidelines only. It's possible to have cooler or hotter days in the Spring.