Mount Moriah, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 0.1 °C (low) to 6.5 °C (high). Annual precipitation averages 883 Millimeters. Mount Moriah 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.98 °C | -4.17 °C | 25 mm |
| February | -10.72 °C | -4.54 °C | 12 mm |
| March | -9.11 °C | -2.73 °C | 32 mm |
| April | -3.59 °C | 2.23 °C | 54 mm |
| May | 1.31 °C | 8.75 °C | 78 mm |
| June | 6.37 °C | 14.32 °C | 70 mm |
| July | 10.96 °C | 19.07 °C | 95 mm |
| August | 11.61 °C | 19.05 °C | 112 mm |
| September | 8.13 °C | 14.59 °C | 123 mm |
| October | 3.69 °C | 8.68 °C | 116 mm |
| November | -0.9 °C | 3.6 °C | 104 mm |
| December | -6.06 °C | -1.23 °C | 62 mm |
| Annual | 0.1 °C | 6.5 °C | 883 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |