| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 59i - Hudson Valley | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 12518 - Cornwall, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 18 | 28 | 38 | 48 | 57 | 62 | 61 | 53 | 41 | 33 | 23 | 40 |
| Avg Max Temp (°F) | 34 | 37 | 47 | 59 | 71 | 79 | 84 | 82 | 73 | 63 | 50 | 39 | 60 |
| Avg Precip (In.) | 4.01 | 3.15 | 4.03 | 4.29 | 4.83 | 4.34 | 4.36 | 4.3 | 4.44 | 4.11 | 4.42 | 3.98 | 50.27 |