Gillams, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 32.2 °F (low) to 43.6 °F (high). Annual precipitation averages 34.4 Inches. Gillams is located in USDA Plant Hardiness Zone . The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -23.4 °F | -20.1 °F | 584.2 in. |
| February | -23.8 °F | -20.3 °F | 279.4 in. |
| March | -22.9 °F | -19.3 °F | 787.4 in. |
| April | -19.8 °F | -16.6 °F | 1371.6 in. |
| May | -17.1 °F | -12.9 °F | 1981.2 in. |
| June | -14.3 °F | -9.8 °F | 1778 in. |
| July | -11.7 °F | -7.2 °F | 2387.6 in. |
| August | -11.4 °F | -7.2 °F | 2819.4 in. |
| September | -13.3 °F | -9.7 °F | 3124.2 in. |
| October | -15.8 °F | -13 °F | 2921 in. |
| November | -18.3 °F | -15.8 °F | 2616.2 in. |
| December | -21.2 °F | -18.5 °F | 1524 in. |
| Annual | 32.2 °F | 43.6 °F | 34.38 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | |
| Current Drought Conditions | Normal |