| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°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: | 83c - Ontario Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13607 - Alexandria Bay, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 10 | 20 | 33 | 44 | 52 | 58 | 56 | 48 | 37 | 29 | 16 | 34 |
| Avg Max Temp (°F) | 28 | 32 | 42 | 55 | 68 | 76 | 82 | 80 | 70 | 58 | 46 | 34 | 56 |
| Avg Precip (In.) | 3.04 | 2.29 | 2.68 | 3.08 | 3.21 | 3.29 | 3.22 | 3.77 | 4.31 | 3.45 | 3.94 | 3.24 | 39.51 |