| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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 44121 - Cleveland, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 28 | 37 | 48 | 57 | 61 | 60 | 54 | 43 | 35 | 25 | 40 |
| Avg Max Temp (°F) | 33 | 36 | 46 | 57 | 69 | 77 | 81 | 80 | 73 | 62 | 50 | 39 | 59 |
| Avg Precip (In.) | 2.53 | 2.16 | 2.91 | 3.4 | 3.51 | 4.02 | 3.6 | 3.91 | 3.9 | 3.09 | 3.51 | 3.27 | 39.81 |