Ballston Spa, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.8 °F (low) to 58.5 °F (high). Annual precipitation averages 45.9 Inches. Ballston Spa is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.9 °F | 31.7 °F | 3.32 in. |
| February | 16.3 °F | 34.7 °F | 2.69 in. |
| March | 24.8 °F | 43.6 °F | 3.5 in. |
| April | 36.2 °F | 58.5 °F | 3.74 in. |
| May | 47.8 °F | 70.6 °F | 3.74 in. |
| June | 56.9 °F | 78.5 °F | 4.66 in. |
| July | 61.6 °F | 83.1 °F | 4.84 in. |
| August | 60.1 °F | 81.1 °F | 4.04 in. |
| September | 52.4 °F | 74.0 °F | 3.86 in. |
| October | 41.2 °F | 61.1 °F | 4.28 in. |
| November | 31.1 °F | 48.2 °F | 3.41 in. |
| December | 22.2 °F | 36.9 °F | 3.78 in. |
| Annual | 38.8 °F | 58.5 °F | 45.86 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |