Hartsdale, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.4 °F (low) to 61.9 °F (high). Annual precipitation averages 49.1 Inches. Hartsdale 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 | 23.0 °F | 38.3 °F | 3.73 in. |
| February | 24.3 °F | 40.9 °F | 2.86 in. |
| March | 31.2 °F | 48.3 °F | 4.11 in. |
| April | 41.3 °F | 60.6 °F | 3.84 in. |
| May | 51.0 °F | 70.7 °F | 3.74 in. |
| June | 60.4 °F | 79.6 °F | 4.72 in. |
| July | 66.1 °F | 84.5 °F | 4.21 in. |
| August | 64.8 °F | 82.6 °F | 4.63 in. |
| September | 57.7 °F | 76.0 °F | 4.76 in. |
| October | 46.4 °F | 64.4 °F | 4.3 in. |
| November | 36.9 °F | 53.6 °F | 3.83 in. |
| December | 29.4 °F | 43.5 °F | 4.38 in. |
| Annual | 44.4 °F | 61.9 °F | 49.11 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 |