| 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: | 60f - Cattaraugus Hills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 14139 - South Wales, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 13 | 22 | 33 | 43 | 53 | 57 | 55 | 49 | 39 | 30 | 21 | 36 |
| Avg Max Temp (°F) | 31 | 33 | 42 | 54 | 67 | 76 | 80 | 78 | 71 | 60 | 46 | 36 | 56 |
| Avg Precip (In.) | 3.37 | 2.51 | 3.24 | 3.41 | 3.44 | 4.04 | 3.85 | 4.05 | 4.67 | 3.65 | 4.23 | 3.98 | 44.45 |