Merritt, British Columbia climate data is summarized below. Average annual temperatures range from 0.3 °C (low) to 12.4 °C (high). Annual precipitation averages 194 Millimeters. Merritt is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.68 °C | -1.39 °C | 0 mm |
| February | -8.43 °C | 1.46 °C | 0 mm |
| March | -5.95 °C | 5.64 °C | 0 mm |
| April | -1.71 °C | 10.75 °C | 3 mm |
| May | 5.26 °C | 18.75 °C | 29 mm |
| June | 8.32 °C | 22 °C | 30 mm |
| July | 11.29 °C | 26.99 °C | 21 mm |
| August | 10.48 °C | 26.64 °C | 18 mm |
| September | 6.04 °C | 21.23 °C | 22 mm |
| October | 1.69 °C | 13.67 °C | 35 mm |
| November | -3.99 °C | 4.51 °C | 36 mm |
| December | -9.84 °C | -2 °C | 0 mm |
| Annual | 0.3 °C | 12.4 °C | 194 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |