Moncton, New Brunswick climate data is summarized below. Average annual temperatures range from 34.7 °F (low) to 52.3 °F (high). Annual precipitation averages 12.8 Inches. 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 | -24.5 °F | -19.5 °F | 50.8 in. |
| February | -24.2 °F | -19 °F | 0 in. |
| March | -22 °F | -16.8 °F | 228.6 in. |
| April | -18.2 °F | -12.8 °F | 381 in. |
| May | -14.9 °F | -8.7 °F | 711.2 in. |
| June | -12 °F | -6.1 °F | 1168.4 in. |
| July | -9.5 °F | -3.5 °F | 1549.4 in. |
| August | -9.8 °F | -3.9 °F | 1498.6 in. |
| September | -12.5 °F | -6.4 °F | 1092.2 in. |
| October | -15.5 °F | -10.2 °F | 711.2 in. |
| November | -18.4 °F | -13.9 °F | 711.2 in. |
| December | -22 °F | -17.6 °F | 152.4 in. |
| Annual | 34.7 °F | 52.3 °F | 12.78 in. |
| 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 : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |