York Harbour, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 35.9 °F (low) to 43 °F (high). Annual precipitation averages 35.2 Inches. York Harbour is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -22 °F | -19.5 °F | 736.6 in. |
| February | -22.3 °F | -19.8 °F | 431.8 in. |
| March | -21.5 °F | -19.1 °F | 914.4 in. |
| April | -18.9 °F | -16.9 °F | 1447.8 in. |
| May | -16.2 °F | -14 °F | 1981.2 in. |
| June | -13.4 °F | -11.2 °F | 1651 in. |
| July | -10.8 °F | -8.5 °F | 2362.2 in. |
| August | -9.9 °F | -7.8 °F | 2717.8 in. |
| September | -11.9 °F | -9.9 °F | 3073.4 in. |
| October | -14.6 °F | -12.7 °F | 2895.6 in. |
| November | -17.3 °F | -15.3 °F | 2717.8 in. |
| December | -20.1 °F | -17.8 °F | 1778 in. |
| Annual | 35.9 °F | 43 °F | 35.19 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |