Trinity, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 36.6 °F (low) to 45.1 °F (high). Annual precipitation averages 35.9 Inches. Trinity is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -21.2 °F | -18.4 °F | 1117.6 in. |
| February | -21.6 °F | -18.8 °F | 1143 in. |
| March | -20.7 °F | -18.2 °F | 1041.4 in. |
| April | -18.6 °F | -16.3 °F | 1524 in. |
| May | -16.3 °F | -13.8 °F | 1955.8 in. |
| June | -14 °F | -11.3 °F | 1778 in. |
| July | -11.2 °F | -8.2 °F | 1981.2 in. |
| August | -10.3 °F | -7.7 °F | 2235.2 in. |
| September | -12 °F | -9.2 °F | 2641.6 in. |
| October | -14.3 °F | -11.9 °F | 2844.8 in. |
| November | -16.7 °F | -14.4 °F | 2641.6 in. |
| December | -19.3 °F | -16.8 °F | 2260.6 in. |
| Annual | 36.6 °F | 45.1 °F | 35.88 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |