Saint-Quentin, New Brunswick climate data is summarized below. Average annual temperatures range from -1.5 °C (low) to 8.4 °C (high). Annual precipitation averages 641 Millimeters. Saint-Quentin is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.87 °C | -7.27 °C | 0 mm |
| February | -15.45 °C | -5.9 °C | 0 mm |
| March | -11.91 °C | -1.37 °C | 2 mm |
| April | -3.84 °C | 5.42 °C | 36 mm |
| May | 3.67 °C | 15.08 °C | 63 mm |
| June | 9.04 °C | 20.16 °C | 109 mm |
| July | 12.72 °C | 23.59 °C | 132 mm |
| August | 12.04 °C | 23 °C | 103 mm |
| September | 7.08 °C | 18.02 °C | 72 mm |
| October | 1.91 °C | 10.69 °C | 66 mm |
| November | -3.69 °C | 3.45 °C | 54 mm |
| December | -12.11 °C | -3.83 °C | 4 mm |
| Annual | -1.5 °C | 8.4 °C | 641 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |