Rock Hill, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.6 °F (low) to 56.6 °F (high). Annual precipitation averages 51.5 Inches. Rock Hill is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.6 °F | 31.5 °F | 3.63 in. |
| February | 15.4 °F | 34.7 °F | 2.91 in. |
| March | 23.0 °F | 42.8 °F | 4.11 in. |
| April | 33.9 °F | 55.9 °F | 3.96 in. |
| May | 44.5 °F | 67.4 °F | 4.18 in. |
| June | 53.9 °F | 75.3 °F | 4.73 in. |
| July | 58.2 °F | 80.2 °F | 4.86 in. |
| August | 57.1 °F | 78.1 °F | 4.68 in. |
| September | 49.6 °F | 71.2 °F | 5.07 in. |
| October | 39.0 °F | 59.0 °F | 5.06 in. |
| November | 28.9 °F | 47.3 °F | 3.8 in. |
| December | 20.9 °F | 36.1 °F | 4.54 in. |
| Annual | 36.6 °F | 56.6 °F | 51.53 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |