Mount Moriah, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 32.3 °F (low) to 43.7 °F (high). Annual precipitation averages 34.8 Inches. 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 | -23.3 °F | -20.1 °F | 635 in. |
| February | -23.7 °F | -20.3 °F | 304.8 in. |
| March | -22.8 °F | -19.3 °F | 812.8 in. |
| April | -19.8 °F | -16.5 °F | 1371.6 in. |
| May | -17.1 °F | -12.9 °F | 1981.2 in. |
| June | -14.2 °F | -9.8 °F | 1778 in. |
| July | -11.7 °F | -7.2 °F | 2413 in. |
| August | -11.3 °F | -7.2 °F | 2844.8 in. |
| September | -13.3 °F | -9.7 °F | 3124.2 in. |
| October | -15.7 °F | -13 °F | 2946.4 in. |
| November | -18.3 °F | -15.8 °F | 2641.6 in. |
| December | -21.1 °F | -18.5 °F | 1574.8 in. |
| Annual | 32.3 °F | 43.7 °F | 34.76 in. |
| 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 : -20°F to -15°F |
| Current Drought Conditions | Normal |