| 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: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 60c - Catskills Transition |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 12496 - Windham, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 11 | 20 | 31 | 42 | 50 | 55 | 53 | 46 | 35 | 27 | 16 | 33 |
| Avg Max Temp (°F) | 28 | 31 | 39 | 51 | 64 | 71 | 75 | 73 | 66 | 56 | 44 | 33 | 53 |
| Avg Precip (In.) | 4.22 | 3.26 | 4.28 | 4.3 | 4.62 | 4.49 | 3.86 | 3.94 | 4.42 | 4.17 | 4.44 | 4.01 | 50 |