Westport, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from -0.3 °C (low) to 6.2 °C (high). Annual precipitation averages 700 Millimeters. Westport is located in USDA Plant Hardiness Zone . 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 | -10.66 °C | -4.57 °C | 8 mm |
| February | -10.89 °C | -4.71 °C | 11 mm |
| March | -8.92 °C | -2.77 °C | 19 mm |
| April | -3.53 °C | 2.06 °C | 42 mm |
| May | 0.67 °C | 7.98 °C | 65 mm |
| June | 5.85 °C | 13.7 °C | 68 mm |
| July | 10.75 °C | 19.15 °C | 84 mm |
| August | 11.09 °C | 18.89 °C | 96 mm |
| September | 7.3 °C | 14.45 °C | 101 mm |
| October | 3 °C | 8.27 °C | 96 mm |
| November | -1.61 °C | 3.13 °C | 69 mm |
| December | -6.54 °C | -1.64 °C | 41 mm |
| Annual | -0.3 °C | 6.2 °C | 700 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 | |
| Current Drought Conditions | Normal |