Gillams, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 0.1 °C (low) to 6.4 °C (high). Annual precipitation averages 873 Millimeters. 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 | -10.04 °C | -4.19 °C | 23 mm |
| February | -10.77 °C | -4.56 °C | 11 mm |
| March | -9.15 °C | -2.75 °C | 31 mm |
| April | -3.61 °C | 2.2 °C | 54 mm |
| May | 1.26 °C | 8.72 °C | 78 mm |
| June | 6.32 °C | 14.28 °C | 70 mm |
| July | 10.91 °C | 19.04 °C | 94 mm |
| August | 11.55 °C | 19 °C | 111 mm |
| September | 8.05 °C | 14.54 °C | 123 mm |
| October | 3.64 °C | 8.63 °C | 115 mm |
| November | -0.96 °C | 3.56 °C | 103 mm |
| December | -6.11 °C | -1.27 °C | 60 mm |
| Annual | 0.1 °C | 6.4 °C | 873 mm |
| 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 |