York Harbour, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.2 °C (low) to 6.1 °C (high). Annual precipitation averages 894 Millimeters. 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 | -7.59 °C | -3.03 °C | 29 mm |
| February | -8.17 °C | -3.69 °C | 17 mm |
| March | -6.7 °C | -2.33 °C | 36 mm |
| April | -2.08 °C | 1.53 °C | 57 mm |
| May | 2.77 °C | 6.75 °C | 78 mm |
| June | 7.83 °C | 11.87 °C | 65 mm |
| July | 12.57 °C | 16.63 °C | 93 mm |
| August | 14.11 °C | 17.9 °C | 107 mm |
| September | 10.57 °C | 14.27 °C | 121 mm |
| October | 5.78 °C | 9.06 °C | 114 mm |
| November | 0.84 °C | 4.43 °C | 107 mm |
| December | -4.11 °C | -0.1 °C | 70 mm |
| Annual | 2.2 °C | 6.1 °C | 894 mm |
| 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 : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |