| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 83c - Ontario Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13074 - Hannibal, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 17 | 25 | 36 | 46 | 55 | 61 | 60 | 52 | 42 | 33 | 22 | 39 |
| Avg Max Temp (°F) | 31 | 33 | 42 | 53 | 66 | 75 | 80 | 78 | 71 | 59 | 47 | 36 | 56 |
| Avg Precip (In.) | 3.16 | 2.48 | 3.06 | 3.36 | 3.19 | 3.6 | 3.16 | 3.68 | 4.22 | 3.67 | 4.18 | 3.44 | 41.2 |