Trepassey, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 38.1 °F (low) to 47.1 °F (high). Annual precipitation averages 46.7 Inches. Trepassey is located in USDA Plant Hardiness Zone . 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 | -20.3 °F | -17.4 °F | 2362.2 in. |
| February | -20.8 °F | -18 °F | 2286 in. |
| March | -20 °F | -17.5 °F | 2209.8 in. |
| April | -18.2 °F | -15.5 °F | 2540 in. |
| May | -16.1 °F | -13.1 °F | 2235.2 in. |
| June | -13.8 °F | -10.8 °F | 2133.6 in. |
| July | -11.1 °F | -8.2 °F | 2336.8 in. |
| August | -10.1 °F | -7.3 °F | 1930.4 in. |
| September | -11.7 °F | -8.7 °F | 2514.6 in. |
| October | -13.9 °F | -11.3 °F | 3200.4 in. |
| November | -16.2 °F | -13.7 °F | 3302 in. |
| December | -18.5 °F | -15.9 °F | 3073.4 in. |
| Annual | 38.1 °F | 47.1 °F | 46.69 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 | |
| Current Drought Conditions | Normal |