| 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 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 1 - May 10 |
| 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 13339 - Fort Plain, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 15 | 24 | 35 | 46 | 55 | 60 | 58 | 50 | 39 | 31 | 20 | 37 |
| Avg Max Temp (°F) | 31 | 34 | 43 | 57 | 70 | 78 | 82 | 80 | 72 | 61 | 48 | 36 | 58 |
| Avg Precip (In.) | 3.01 | 2.42 | 3.39 | 3.59 | 3.77 | 4.23 | 3.93 | 3.87 | 4.06 | 3.47 | 3.8 | 3.18 | 42.72 |