Bay Roberts, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 36.9 °F (low) to 46.4 °F (high). Annual precipitation averages 39.2 Inches. Bay Roberts 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 | -21 °F | -17.9 °F | 1676.4 in. |
| February | -21.4 °F | -18.5 °F | 1651 in. |
| March | -20.5 °F | -17.9 °F | 1524 in. |
| April | -18.4 °F | -15.7 °F | 1828.8 in. |
| May | -16.3 °F | -13.2 °F | 2032 in. |
| June | -14 °F | -10.8 °F | 1727.2 in. |
| July | -11.2 °F | -7.8 °F | 1955.8 in. |
| August | -10.4 °F | -7.2 °F | 1981.2 in. |
| September | -12 °F | -8.9 °F | 2540 in. |
| October | -14.2 °F | -11.6 °F | 2997.2 in. |
| November | -16.6 °F | -14 °F | 2743.2 in. |
| December | -19.1 °F | -16.4 °F | 2616.2 in. |
| Annual | 36.9 °F | 46.4 °F | 39.18 in. |
| 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 : -15°F to -10°F |
| Current Drought Conditions | Normal |