Oromocto, New Brunswick climate data is summarized below. Average annual temperatures range from 33.7 °F (low) to 52.7 °F (high). Annual precipitation averages 35.9 Inches. Oromocto is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -25.2 °F | -19.7 °F | 355.6 in. |
| February | -25 °F | -19.1 °F | 482.6 in. |
| March | -22.4 °F | -16.2 °F | 1651 in. |
| April | -18.3 °F | -11.9 °F | 1854.2 in. |
| May | -14.7 °F | -8.2 °F | 2413 in. |
| June | -11.9 °F | -5.6 °F | 2387.6 in. |
| July | -9.8 °F | -3.5 °F | 2184.4 in. |
| August | -10.2 °F | -3.9 °F | 2235.2 in. |
| September | -12.9 °F | -6.3 °F | 1955.8 in. |
| October | -15.8 °F | -10.2 °F | 2844.8 in. |
| November | -18.7 °F | -14 °F | 2844.8 in. |
| December | -22.4 °F | -17.9 °F | 1930.4 in. |
| Annual | 33.7 °F | 52.7 °F | 35.86 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |