| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | 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: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 59i - Hudson Valley |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 12159 - Slingerlands, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 15 | 25 | 36 | 47 | 56 | 61 | 59 | 50 | 39 | 31 | 20 | 38 |
| Avg Max Temp (°F) | 32 | 35 | 45 | 58 | 70 | 79 | 83 | 81 | 72 | 61 | 48 | 36 | 58 |
| Avg Precip (In.) | 2.73 | 2.2 | 3.09 | 3.31 | 3.68 | 3.88 | 3.57 | 3.58 | 3.29 | 3.21 | 3.24 | 2.75 | 38.52 |