| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°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 13440 - Rome, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 14 | 23 | 35 | 46 | 55 | 60 | 58 | 51 | 40 | 31 | 19 | 37 |
| Avg Max Temp (°F) | 29 | 32 | 41 | 55 | 68 | 76 | 81 | 79 | 71 | 59 | 46 | 35 | 56 |
| Avg Precip (In.) | 3.78 | 2.92 | 3.53 | 3.57 | 3.79 | 4.1 | 3.97 | 3.64 | 4.75 | 3.52 | 4.15 | 3.88 | 45.59 |