| 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. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 83c - Ontario Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13078 - Jamesville, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 14 | 23 | 34 | 45 | 54 | 59 | 58 | 50 | 39 | 31 | 20 | 37 |
| Avg Max Temp (°F) | 30 | 32 | 42 | 54 | 67 | 76 | 80 | 78 | 70 | 59 | 46 | 35 | 56 |
| Avg Precip (In.) | 2.79 | 2.3 | 3.05 | 3.47 | 3.43 | 3.9 | 3.88 | 3.66 | 4.38 | 3.43 | 3.89 | 3.26 | 41.43 |