| 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 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 14701 - Jamestown, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 15 | 23 | 33 | 44 | 53 | 57 | 55 | 48 | 37 | 31 | 21 | 36 |
| Avg Max Temp (°F) | 31 | 34 | 44 | 55 | 68 | 76 | 80 | 78 | 71 | 59 | 47 | 35 | 56 |
| Avg Precip (In.) | 3.1 | 2.52 | 3.27 | 3.56 | 3.7 | 4.73 | 4.24 | 4.24 | 4.55 | 3.82 | 4.12 | 3.8 | 45.67 |