Port Anson, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 33.5 °F (low) to 44.2 °F (high). Annual precipitation averages 30.9 Inches. 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 | -22.9 °F | -19.7 °F | 355.6 in. |
| February | -23 °F | -19.9 °F | 533.4 in. |
| March | -22 °F | -19 °F | 508 in. |
| April | -19.3 °F | -16.5 °F | 1244.6 in. |
| May | -17 °F | -13.4 °F | 1879.6 in. |
| June | -14.2 °F | -10.2 °F | 1955.8 in. |
| July | -11.4 °F | -7 °F | 2184.4 in. |
| August | -11 °F | -7 °F | 2565.4 in. |
| September | -13 °F | -9.2 °F | 2667 in. |
| October | -15.4 °F | -12.6 °F | 2667 in. |
| November | -18 °F | -15.5 °F | 2032 in. |
| December | -20.7 °F | -18.2 °F | 1346.2 in. |
| Annual | 33.5 °F | 44.2 °F | 30.91 in. |
| 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 : -25°F to -20°F |
| Current Drought Conditions | Normal |