| 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 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| 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: | 60a - Glaciated Low Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13861 - West Oneonta, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 13 | 22 | 32 | 42 | 51 | 56 | 54 | 47 | 36 | 28 | 18 | 34 |
| Avg Max Temp (°F) | 31 | 34 | 43 | 55 | 68 | 76 | 80 | 78 | 70 | 59 | 47 | 35 | 56 |
| Avg Precip (In.) | 2.69 | 2.22 | 3.08 | 3.47 | 3.89 | 4.08 | 3.87 | 3.64 | 4.01 | 3.45 | 3.57 | 3.01 | 40.98 |