Placentia, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 37.2 °F (low) to 47 °F (high). Annual precipitation averages 43.7 Inches. Placentia is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.9 °F | -17.8 °F | 1930.4 in. |
| February | -21.4 °F | -18.4 °F | 1930.4 in. |
| March | -20.4 °F | -17.8 °F | 1828.8 in. |
| April | -18.4 °F | -15.5 °F | 2159 in. |
| May | -16.1 °F | -12.8 °F | 2184.4 in. |
| June | -13.9 °F | -10.4 °F | 1930.4 in. |
| July | -11.1 °F | -7.7 °F | 2159 in. |
| August | -10.3 °F | -7 °F | 2184.4 in. |
| September | -11.9 °F | -8.7 °F | 2768.6 in. |
| October | -14.2 °F | -11.5 °F | 3225.8 in. |
| November | -16.6 °F | -13.9 °F | 3124.2 in. |
| December | -19 °F | -16.3 °F | 2794 in. |
| Annual | 37.2 °F | 47 °F | 43.74 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |