Port Anson, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 0.8 °C (low) to 6.8 °C (high). Annual precipitation averages 785 Millimeters. Port Anson is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.13 °C | -3.54 °C | 14 mm |
| February | -9.46 °C | -3.81 °C | 21 mm |
| March | -7.66 °C | -2.12 °C | 20 mm |
| April | -2.81 °C | 2.29 °C | 49 mm |
| May | 1.38 °C | 7.87 °C | 74 mm |
| June | 6.45 °C | 13.57 °C | 77 mm |
| July | 11.51 °C | 19.36 °C | 86 mm |
| August | 12.13 °C | 19.47 °C | 101 mm |
| September | 8.58 °C | 15.36 °C | 105 mm |
| October | 4.3 °C | 9.37 °C | 105 mm |
| November | -0.36 °C | 4.18 °C | 80 mm |
| December | -5.24 °C | -0.69 °C | 53 mm |
| Annual | 0.8 °C | 6.8 °C | 785 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |