Heart's Content, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 3.1 °C (low) to 7.6 °C (high). Annual precipitation averages 950 Millimeters. Heart's Content 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.31 °C | -0.18 °C | 58 mm |
| February | -6.04 °C | -1.22 °C | 57 mm |
| March | -4.42 °C | -0.26 °C | 54 mm |
| April | -0.92 °C | 3.17 °C | 66 mm |
| May | 2.9 °C | 7.44 °C | 77 mm |
| June | 6.96 °C | 11.64 °C | 67 mm |
| July | 12 °C | 17.06 °C | 77 mm |
| August | 13.66 °C | 18.24 °C | 80 mm |
| September | 10.82 °C | 15.61 °C | 101 mm |
| October | 6.88 °C | 10.95 °C | 112 mm |
| November | 2.54 °C | 6.72 °C | 103 mm |
| December | -1.95 °C | 2.52 °C | 98 mm |
| Annual | 3.1 °C | 7.6 °C | 950 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |