| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 54b - Chicago Lake Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 60610 - Chicago, IL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 22 | 31 | 40 | 50 | 60 | 65 | 64 | 56 | 45 | 34 | 23 | 42 |
| Avg Max Temp (°F) | 32 | 37 | 47 | 59 | 70 | 80 | 84 | 83 | 76 | 64 | 49 | 37 | 60 |
| Avg Precip (In.) | 2.02 | 1.71 | 2.83 | 3.71 | 3.7 | 4.17 | 3.67 | 4.02 | 3.3 | 2.72 | 3.21 | 2.59 | 37.65 |