Holyrood, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.1 °C (low) to 8.7 °C (high). Annual precipitation averages 1035 Millimeters. Holyrood is located in USDA Plant Hardiness Zone 5b. 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 | -6.55 °C | -0.32 °C | 64 mm |
| February | -7.48 °C | -1.33 °C | 71 mm |
| March | -5.78 °C | -0.13 °C | 67 mm |
| April | -1.87 °C | 4.4 °C | 79 mm |
| May | 2.29 °C | 9.56 °C | 82 mm |
| June | 6.37 °C | 14.25 °C | 72 mm |
| July | 11.59 °C | 19.75 °C | 81 mm |
| August | 12.65 °C | 20.22 °C | 76 mm |
| September | 9.38 °C | 16.85 °C | 99 mm |
| October | 5.63 °C | 11.31 °C | 122 mm |
| November | 1.44 °C | 6.8 °C | 115 mm |
| December | -3 °C | 2.32 °C | 107 mm |
| Annual | 2.1 °C | 8.7 °C | 1035 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |