| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°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 5a: -20F to -15F |
| 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 14883 - Spencer, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 12 | 21 | 31 | 41 | 50 | 55 | 53 | 46 | 35 | 27 | 18 | 33 |
| Avg Max Temp (°F) | 32 | 35 | 44 | 56 | 69 | 77 | 81 | 80 | 72 | 60 | 47 | 36 | 57 |
| Avg Precip (In.) | 2.31 | 2.06 | 2.81 | 3.36 | 3.38 | 4.08 | 3.75 | 3.53 | 3.76 | 3.15 | 3.28 | 2.73 | 38.19 |