Experience the dynamic weather in Chicago, where summers sizzle with highs averaging 82°F (28°C), while winters chill with lows dipping to 19°F (-7°C). Surprisingly, Chicago receives less annual rainfall than New York City. To truly immerse in the city's vibrant atmosphere, visit Millennium Park during the summer and enjoy a free concert amidst the iconic Cloud Gate sculpture.
Today's Forecast
5-Day Forecast
Chicago Climate & Weather Averages
Chicago is warmest in July, when daytime highs average 80°F, and coldest in January at around 32°F. The wettest month is July. The table below shows the monthly averages for Chicago, based on recorded data from 2015–2024.
| Month | Avg High | Avg Low | Rainfall |
|---|---|---|---|
| Jan | 32° | 20° | 2.6 in |
| Feb | 36° | 20° | 2.4 in |
| Mar | 45° | 31° | 3.5 in |
| Apr | 55° | 39° | 4.2 in |
| May | 66° | 50° | 5.3 in |
| Jun | 77° | 61° | 4.5 in |
| Jul | 80° | 66° | 6 in |
| Aug | 80° | 66° | 4.2 in |
| Sep | 75° | 61° | 3.8 in |
| Oct | 62° | 49° | 4.8 in |
| Nov | 48° | 36° | 2.5 in |
| Dec | 39° | 27° | 2.6 in |
Best time to visit: June–September offers the most comfortable conditions, with daytime highs around 77°F. Pack light, breathable layers and a light waterproof — Chicago sees rain year-round, peaking in July. For the coldest spell around January, bring a warm coat.
Source: Open-Meteo ERA5 archive. Averages computed from daily records.