| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°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: | 55a - Clayey High Lime Till Plains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 44820 - Bucyrus, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 18 | 27 | 36 | 48 | 57 | 61 | 59 | 51 | 40 | 32 | 22 | 39 |
| Avg Max Temp (°F) | 32 | 35 | 46 | 59 | 70 | 79 | 83 | 81 | 74 | 62 | 49 | 37 | 59 |
| Avg Precip (In.) | 2.3 | 1.98 | 2.7 | 3.45 | 4.05 | 4.33 | 4.27 | 3.93 | 3.12 | 2.38 | 3.1 | 2.81 | 38.42 |