| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 58i - Glaciated Reading Prong | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 12520 - Cornwall on Hudson, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 19 | 28 | 39 | 49 | 58 | 63 | 61 | 54 | 42 | 33 | 24 | 41 |
| Avg Max Temp (°F) | 35 | 38 | 48 | 60 | 71 | 80 | 84 | 83 | 74 | 63 | 51 | 40 | 61 |
| Avg Precip (In.) | 3.75 | 2.9 | 3.71 | 3.96 | 4.6 | 4.05 | 4.51 | 3.94 | 4.1 | 3.87 | 3.97 | 3.58 | 46.93 |