| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| 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 12020 - Ballston Spa, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 14 | 24 | 35 | 46 | 54 | 60 | 58 | 49 | 38 | 31 | 19 | 37 |
| Avg Max Temp (°F) | 30 | 34 | 45 | 58 | 71 | 79 | 83 | 81 | 72 | 60 | 47 | 35 | 58 |
| Avg Precip (In.) | 3.3 | 2.49 | 3.49 | 3.55 | 4.05 | 3.96 | 3.7 | 3.91 | 3.58 | 3.48 | 3.64 | 3.22 | 42.37 |