| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 44120 - Cleveland, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 19 | 27 | 37 | 47 | 57 | 61 | 60 | 53 | 42 | 34 | 24 | 40 |
| Avg Max Temp (°F) | 33 | 36 | 46 | 57 | 69 | 78 | 82 | 80 | 73 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 2.62 | 2.25 | 2.94 | 3.4 | 3.64 | 4.07 | 3.67 | 3.86 | 3.81 | 2.96 | 3.44 | 3.3 | 39.96 |