South Brook, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from -0.2 °C (low) to 7.3 °C (high). Annual precipitation averages 766 Millimeters. South Brook is located in USDA Plant Hardiness Zone 4a. 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 | -10.71 °C | -4.06 °C | 13 mm |
| February | -11.21 °C | -4.29 °C | 21 mm |
| March | -9.24 °C | -2.33 °C | 20 mm |
| April | -3.46 °C | 3.05 °C | 48 mm |
| May | 1.1 °C | 9.83 °C | 73 mm |
| June | 6.17 °C | 15.71 °C | 76 mm |
| July | 11.11 °C | 21.37 °C | 85 mm |
| August | 11.14 °C | 20.67 °C | 101 mm |
| September | 7.39 °C | 15.9 °C | 104 mm |
| October | 3.2 °C | 9.4 °C | 104 mm |
| November | -1.34 °C | 3.92 °C | 73 mm |
| December | -6.33 °C | -1.11 °C | 48 mm |
| Annual | -0.2 °C | 7.3 °C | 766 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |