| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| 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: | 83d - St. Lawrence Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13646 - Hammond, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 8 | 19 | 33 | 44 | 53 | 58 | 56 | 47 | 37 | 28 | 14 | 34 |
| Avg Max Temp (°F) | 27 | 30 | 40 | 54 | 67 | 76 | 81 | 79 | 70 | 58 | 45 | 32 | 55 |
| Avg Precip (In.) | 2.63 | 2.12 | 2.56 | 3.05 | 3.15 | 3.28 | 3.28 | 3.81 | 4.2 | 3.3 | 3.7 | 2.97 | 38.06 |