Chicago weather by month
Chicago has warm summers, cold winters and moderate rain. The most pleasant month is September.
Find Chicago’s climate twinWhere else has Chicago’s September weather?Stays in ChicagoThings to do in Chicago
Month by month
Average daytime high, night low, rain or snow, how the air feels and how strong the sun is, 1991–2020. Best months are highlighted.
| Month | High | Low | Rain | Air | Sun |
|---|---|---|---|---|---|
| January | 33°F 0°C | 18°F -8°C | 2.1 in 53 mm | Dry | Weak sun |
| February | 37°F 3°C | 21°F -6°C | 1.9 in 47 mm | Dry | Moderate sun |
| March | 47°F 8°C | 31°F -1°C | 2.4 in 61 mm | Dry | Moderate sun |
| April | 60°F 15°C | 39°F 4°C | 4.5 in 115 mm | Dry | Sunny |
| May | 71°F 22°C | 49°F 9°C | 4.5 in 114 mm | Comfortable | Sunny |
| June | 80°F 27°C | 59°F 15°C | 4.4 in 112 mm | A little humid | Strong sun |
| July | 84°F 29°C | 64°F 18°C | 3.6 in 92 mm | A little humid | Strong sun |
| August | 82°F 28°C | 63°F 17°C | 4.2 in 106 mm | A little humid | Sunny |
| September | 76°F 25°C | 56°F 13°C | 3.2 in 81 mm | Comfortable | Sunny |
| October | 64°F 18°C | 44°F 7°C | 3.1 in 79 mm | Dry | Moderate sun |
| November | 49°F 9°C | 33°F 1°C | 2.9 in 73 mm | Dry | Weak sun |
| December | 37°F 3°C | 23°F -5°C | 2.3 in 58 mm | Dry | Weak sun |
Cities with a climate like Chicago
Whole-year match out of 100, one city per country, seasons lined up across the equator.
- Hamilton Canada88
- Vladikavkaz Russia86
- Morioka Japan84
- Chernivtsi Ukraine82
- Iaşi Romania81
- Graz Austria81