Clark's Harbour, Nova Scotia climate data is summarized below. Average annual temperatures range from 5.5 °C (low) to 9.9 °C (high). Annual precipitation averages 1325 Millimeters. Clark's Harbour is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.29 °C | 3.04 °C | 98 mm |
| February | -3.11 °C | 1.95 °C | 98 mm |
| March | -1.04 °C | 3.57 °C | 106 mm |
| April | 2.74 °C | 6.84 °C | 110 mm |
| May | 6.21 °C | 9.95 °C | 106 mm |
| June | 9.89 °C | 13.56 °C | 102 mm |
| July | 12.91 °C | 16.67 °C | 95 mm |
| August | 13.63 °C | 17.4 °C | 85 mm |
| September | 11.98 °C | 16.23 °C | 90 mm |
| October | 9.13 °C | 13.88 °C | 127 mm |
| November | 5.09 °C | 9.85 °C | 147 mm |
| December | 0.81 °C | 6.11 °C | 161 mm |
| Annual | 5.5 °C | 9.9 °C | 1325 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |