Oromocto, New Brunswick climate data is summarized below. Average annual temperatures range from 0.9 °C (low) to 11.5 °C (high). Annual precipitation averages 911 Millimeters. 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 | -13.28 °C | -3.5 °C | 14 mm |
| February | -12.94 °C | -2.37 °C | 19 mm |
| March | -8.27 °C | 2.81 °C | 65 mm |
| April | -0.86 °C | 10.5 °C | 73 mm |
| May | 5.59 °C | 17.29 °C | 95 mm |
| June | 10.67 °C | 21.86 °C | 94 mm |
| July | 14.41 °C | 25.7 °C | 86 mm |
| August | 13.71 °C | 25.07 °C | 88 mm |
| September | 8.81 °C | 20.59 °C | 77 mm |
| October | 3.5 °C | 13.63 °C | 112 mm |
| November | -1.67 °C | 6.89 °C | 112 mm |
| December | -8.27 °C | -0.15 °C | 76 mm |
| Annual | 0.9 °C | 11.5 °C | 911 mm |
| 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 : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |