| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 60d - Finger Lakes Uplands and Gorges | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13073 - Groton, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 14 | 23 | 33 | 45 | 54 | 58 | 57 | 49 | 39 | 31 | 20 | 36 |
| Avg Max Temp (°F) | 30 | 31 | 41 | 53 | 66 | 75 | 79 | 78 | 70 | 58 | 46 | 35 | 55 |
| Avg Precip (In.) | 2.19 | 2.1 | 2.73 | 3.29 | 3.37 | 4.3 | 3.65 | 3.45 | 4.21 | 3.46 | 3.45 | 2.78 | 39 |