| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 83f - Mohawk Valley |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13441 - Rome, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 13 | 23 | 34 | 46 | 55 | 60 | 58 | 50 | 39 | 31 | 19 | 37 |
| Avg Max Temp (°F) | 29 | 31 | 41 | 55 | 68 | 76 | 81 | 79 | 70 | 58 | 46 | 34 | 56 |
| Avg Precip (In.) | 3.86 | 2.97 | 3.66 | 3.62 | 3.81 | 4.11 | 4.04 | 3.64 | 4.79 | 3.54 | 4.18 | 3.97 | 46.19 |