Cow Head, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 0.7 °C (low) to 5.3 °C (high). Annual precipitation averages 767 Millimeters. Cow Head 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 | -9.55 °C | -4.33 °C | 13 mm |
| February | -9.9 °C | -4.75 °C | 3 mm |
| March | -8.2 °C | -3.17 °C | 18 mm |
| April | -3 °C | 0.99 °C | 42 mm |
| May | 1.67 °C | 6.28 °C | 73 mm |
| June | 6.82 °C | 11.45 °C | 65 mm |
| July | 11.47 °C | 16.16 °C | 85 mm |
| August | 12.56 °C | 17.09 °C | 100 mm |
| September | 8.98 °C | 13.29 °C | 119 mm |
| October | 4.36 °C | 7.96 °C | 108 mm |
| November | -0.69 °C | 3.2 °C | 87 mm |
| December | -5.67 °C | -1.3 °C | 54 mm |
| Annual | 0.7 °C | 5.3 °C | 767 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |