| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°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: | 83f - Mohawk Valley |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 13452 - Saint Johnsville, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 12 | 22 | 33 | 45 | 54 | 59 | 57 | 49 | 38 | 30 | 18 | 36 |
| Avg Max Temp (°F) | 29 | 32 | 42 | 56 | 69 | 77 | 81 | 79 | 71 | 60 | 46 | 35 | 57 |
| Avg Precip (In.) | 3.03 | 2.54 | 3.38 | 3.59 | 3.89 | 4.28 | 4.2 | 3.83 | 4.29 | 3.47 | 4.06 | 3.33 | 43.89 |