Heart's Content, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 37.6 °F (low) to 45.8 °F (high). Annual precipitation averages 37.4 Inches. 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 | -20.7 °F | -17.9 °F | 1473.2 in. |
| February | -21.1 °F | -18.5 °F | 1447.8 in. |
| March | -20.2 °F | -17.9 °F | 1371.6 in. |
| April | -18.3 °F | -16 °F | 1676.4 in. |
| May | -16.2 °F | -13.6 °F | 1955.8 in. |
| June | -13.9 °F | -11.3 °F | 1701.8 in. |
| July | -11.1 °F | -8.3 °F | 1955.8 in. |
| August | -10.2 °F | -7.6 °F | 2032 in. |
| September | -11.8 °F | -9.1 °F | 2565.4 in. |
| October | -14 °F | -11.7 °F | 2844.8 in. |
| November | -16.4 °F | -14 °F | 2616.2 in. |
| December | -18.9 °F | -16.4 °F | 2489.2 in. |
| Annual | 37.6 °F | 45.8 °F | 37.41 in. |
| 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 : -15°F to -10°F |
| Current Drought Conditions | Normal |