Brome, Quebec climate data is summarized below. Average annual temperatures range from 1.7 °C (low) to 11.6 °C (high). Annual precipitation averages 411 Millimeters. Brome 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 | -13.04 °C | -3.71 °C | 5 mm |
| February | -12.82 °C | -3.53 °C | 0 mm |
| March | -7.25 °C | 2.52 °C | 13 mm |
| April | 0.72 °C | 11.38 °C | 38 mm |
| May | 7.3 °C | 18.95 °C | 54 mm |
| June | 12.28 °C | 23.11 °C | 64 mm |
| July | 14.95 °C | 25.79 °C | 73 mm |
| August | 14.13 °C | 24.79 °C | 57 mm |
| September | 9.64 °C | 20.48 °C | 33 mm |
| October | 4.32 °C | 13.37 °C | 39 mm |
| November | -1.48 °C | 6.47 °C | 26 mm |
| December | -8.28 °C | -0.83 °C | 9 mm |
| Annual | 1.7 °C | 11.6 °C | 411 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 | Normal |