Edmundston, New Brunswick climate data is summarized below. Average annual temperatures range from 30.3 °F (low) to 48.8 °F (high). Annual precipitation averages 26.6 Inches. Edmundston is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -26.9 °F | -21.5 °F | 0 in. |
| February | -26.2 °F | -20.6 °F | 0 in. |
| March | -23.8 °F | -17.7 °F | 0 in. |
| April | -19.1 °F | -13.6 °F | 1016 in. |
| May | -15.3 °F | -8.7 °F | 1778 in. |
| June | -12.5 °F | -6.1 °F | 2743.2 in. |
| July | -10.6 °F | -4.3 °F | 3429 in. |
| August | -11 °F | -4.6 °F | 2692.4 in. |
| September | -13.8 °F | -7.3 °F | 2159 in. |
| October | -16.7 °F | -11.5 °F | 1828.8 in. |
| November | -19.6 °F | -15.5 °F | 1447.8 in. |
| December | -24.1 °F | -19.8 °F | 76.2 in. |
| Annual | 30.3 °F | 48.8 °F | 26.6 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |