| 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. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 70d - Knobs-Lower Scioto Dissected Plateau |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 45647 - Londonderry, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 38 | 49 | 58 | 62 | 60 | 53 | 40 | 32 | 24 | 41 |
| Avg Max Temp (°F) | 37 | 42 | 53 | 64 | 73 | 81 | 85 | 84 | 77 | 66 | 53 | 42 | 63 |
| Avg Precip (In.) | 2.72 | 2.58 | 3.55 | 3.45 | 4.29 | 3.99 | 4.17 | 4 | 3.04 | 2.57 | 3.11 | 3.01 | 40.49 |