Upper Island Cove, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.9 °C (low) to 7.9 °C (high). Annual precipitation averages 982 Millimeters. Upper Island Cove is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.46 °C | -0.13 °C | 64 mm |
| February | -6.24 °C | -1.19 °C | 64 mm |
| March | -4.62 °C | -0.2 °C | 58 mm |
| April | -1.06 °C | 3.5 °C | 70 mm |
| May | 2.76 °C | 7.94 °C | 79 mm |
| June | 6.82 °C | 12.22 °C | 68 mm |
| July | 11.89 °C | 17.66 °C | 77 mm |
| August | 13.43 °C | 18.68 °C | 78 mm |
| September | 10.53 °C | 15.87 °C | 100 mm |
| October | 6.62 °C | 11.03 °C | 115 mm |
| November | 2.33 °C | 6.77 °C | 107 mm |
| December | -2.12 °C | 2.52 °C | 102 mm |
| Annual | 2.9 °C | 7.9 °C | 982 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |