Northern Arm, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 32.9 °F (low) to 46.2 °F (high). Annual precipitation averages 31.7 Inches. Northern Arm 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -23.2 °F | -19.6 °F | 558.8 in. |
| February | -23.6 °F | -19.8 °F | 660.4 in. |
| March | -22.5 °F | -18.8 °F | 584.2 in. |
| April | -19.5 °F | -15.9 °F | 1219.2 in. |
| May | -16.8 °F | -12.1 °F | 1828.8 in. |
| June | -14.1 °F | -8.9 °F | 1955.8 in. |
| July | -11.3 °F | -5.6 °F | 2260.6 in. |
| August | -11.2 °F | -5.9 °F | 2616.2 in. |
| September | -13.3 °F | -8.6 °F | 2616.2 in. |
| October | -15.6 °F | -12.2 °F | 2692.4 in. |
| November | -18.1 °F | -15.2 °F | 2209.8 in. |
| December | -20.9 °F | -18 °F | 1244.6 in. |
| Annual | 32.9 °F | 46.2 °F | 31.7 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |