| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F 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: | 60d - Finger Lakes Uplands and Gorges |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 14850 - Ithaca, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 14 | 23 | 34 | 44 | 53 | 57 | 56 | 48 | 38 | 31 | 21 | 36 |
| Avg Max Temp (°F) | 32 | 34 | 43 | 55 | 68 | 76 | 81 | 79 | 72 | 60 | 48 | 37 | 57 |
| Avg Precip (In.) | 2.06 | 1.75 | 2.49 | 3.09 | 2.99 | 3.37 | 3.53 | 3.28 | 3.76 | 3.18 | 2.94 | 2.38 | 34.83 |