Bay Roberts, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.8 °C (low) to 8 °C (high). Annual precipitation averages 995 Millimeters. 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 | -5.72 °C | -0.21 °C | 66 mm |
| February | -6.52 °C | -1.25 °C | 65 mm |
| March | -4.84 °C | -0.2 °C | 60 mm |
| April | -1.19 °C | 3.67 °C | 72 mm |
| May | 2.68 °C | 8.27 °C | 80 mm |
| June | 6.78 °C | 12.64 °C | 68 mm |
| July | 11.86 °C | 18.02 °C | 77 mm |
| August | 13.29 °C | 18.98 °C | 78 mm |
| September | 10.32 °C | 16.02 °C | 100 mm |
| October | 6.41 °C | 11.05 °C | 118 mm |
| November | 2.14 °C | 6.77 °C | 108 mm |
| December | -2.32 °C | 2.48 °C | 103 mm |
| Annual | 2.8 °C | 8 °C | 995 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 |