| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°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: | 59i - Hudson Valley |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 12033 - Castleton on Hudson, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 15 | 25 | 36 | 47 | 55 | 60 | 59 | 50 | 38 | 30 | 20 | 37 |
| Avg Max Temp (°F) | 32 | 34 | 44 | 57 | 70 | 77 | 83 | 80 | 72 | 60 | 48 | 37 | 58 |
| Avg Precip (In.) | 2.55 | 2.07 | 2.94 | 3.27 | 3.81 | 3.83 | 3.96 | 3.97 | 3.36 | 3.27 | 3.21 | 2.61 | 38.84 |