Trinity, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.6 °C (low) to 7.3 °C (high). Annual precipitation averages 912 Millimeters. 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 | -6.22 °C | -1.05 °C | 44 mm |
| February | -6.96 °C | -1.89 °C | 45 mm |
| March | -5.25 °C | -0.81 °C | 41 mm |
| April | -1.52 °C | 2.59 °C | 60 mm |
| May | 2.59 °C | 7.25 °C | 77 mm |
| June | 6.88 °C | 11.71 °C | 70 mm |
| July | 11.93 °C | 17.31 °C | 78 mm |
| August | 13.39 °C | 18.21 °C | 88 mm |
| September | 10.34 °C | 15.45 °C | 104 mm |
| October | 6.34 °C | 10.55 °C | 112 mm |
| November | 1.97 °C | 6.13 °C | 104 mm |
| December | -2.68 °C | 1.83 °C | 89 mm |
| Annual | 2.6 °C | 7.3 °C | 912 mm |
| 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 : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |