Conception Harbour, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.5 °C (low) to 8.1 °C (high). Annual precipitation averages 1012 Millimeters. Conception Harbour is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.91 °C | -0.24 °C | 65 mm |
| February | -6.74 °C | -1.27 °C | 67 mm |
| March | -5.11 °C | -0.23 °C | 62 mm |
| April | -1.42 °C | 3.76 °C | 75 mm |
| May | 2.52 °C | 8.45 °C | 81 mm |
| June | 6.62 °C | 12.91 °C | 70 mm |
| July | 11.72 °C | 18.28 °C | 79 mm |
| August | 13.07 °C | 19.17 °C | 77 mm |
| September | 10.04 °C | 16.12 °C | 100 mm |
| October | 6.19 °C | 11.05 °C | 120 mm |
| November | 1.94 °C | 6.76 °C | 111 mm |
| December | -2.5 °C | 2.43 °C | 105 mm |
| Annual | 2.5 °C | 8.1 °C | 1012 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |