Merritt, British Columbia climate data is summarized below. Average annual temperatures range from 32.5 °F (low) to 54.3 °F (high). Annual precipitation averages 7.7 Inches. 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 | -23.2 °F | -18.6 °F | 0 in. |
| February | -22.5 °F | -17 °F | 0 in. |
| March | -21.1 °F | -14.6 °F | 0 in. |
| April | -18.7 °F | -11.8 °F | 76.2 in. |
| May | -14.9 °F | -7.4 °F | 736.6 in. |
| June | -13.2 °F | -5.6 °F | 762 in. |
| July | -11.5 °F | -2.8 °F | 533.4 in. |
| August | -12 °F | -3 °F | 457.2 in. |
| September | -14.4 °F | -6 °F | 558.8 in. |
| October | -16.8 °F | -10.2 °F | 889 in. |
| November | -20 °F | -15.3 °F | 914.4 in. |
| December | -23.2 °F | -18.9 °F | 0 in. |
| Annual | 32.5 °F | 54.3 °F | 7.65 in. |
| 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 : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |