Ardsley, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.3 °F (low) to 61.9 °F (high). Annual precipitation averages 49.2 Inches. Ardsley is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.7 °F | 38.2 °F | 3.72 in. |
| February | 24.4 °F | 40.9 °F | 2.89 in. |
| March | 31.1 °F | 48.3 °F | 4.11 in. |
| April | 41.3 °F | 60.7 °F | 3.87 in. |
| May | 51.3 °F | 70.8 °F | 3.78 in. |
| June | 60.3 °F | 79.5 °F | 4.78 in. |
| July | 65.9 °F | 84.6 °F | 4.23 in. |
| August | 64.7 °F | 82.5 °F | 4.62 in. |
| September | 57.6 °F | 75.9 °F | 4.78 in. |
| October | 46.3 °F | 64.3 °F | 4.26 in. |
| November | 36.8 °F | 53.3 °F | 3.78 in. |
| December | 29.2 °F | 43.3 °F | 4.41 in. |
| Annual | 44.3 °F | 61.9 °F | 49.23 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |