Moncton, New Brunswick climate data is summarized below. Average annual temperatures range from 1.5 °C (low) to 11.3 °C (high). Annual precipitation averages 325 Millimeters. Moncton is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.07 °C | -3.1 °C | 2 mm |
| February | -11.55 °C | -2.25 °C | 0 mm |
| March | -7.67 °C | 1.84 °C | 9 mm |
| April | -0.74 °C | 8.97 °C | 15 mm |
| May | 5.12 °C | 16.31 °C | 28 mm |
| June | 10.44 °C | 21.09 °C | 46 mm |
| July | 14.84 °C | 25.62 °C | 61 mm |
| August | 14.42 °C | 24.93 °C | 59 mm |
| September | 9.51 °C | 20.46 °C | 43 mm |
| October | 4.13 °C | 13.7 °C | 28 mm |
| November | -1.1 °C | 7.06 °C | 28 mm |
| December | -7.55 °C | 0.37 °C | 6 mm |
| Annual | 1.5 °C | 11.3 °C | 325 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |