Marilla, British Columbia climate data is summarized below. Average annual temperatures range from 27.1 °F (low) to 44.5 °F (high). Annual precipitation averages 11.5 Inches. Marilla is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -24.3 °F | -19.9 °F | 0 in. |
| February | -24.2 °F | -18.8 °F | 0 in. |
| March | -23.7 °F | -17.5 °F | 0 in. |
| April | -20.8 °F | -15 °F | 609.6 in. |
| May | -17.1 °F | -10.6 °F | 1016 in. |
| June | -15.1 °F | -9.2 °F | 1371.6 in. |
| July | -13.5 °F | -7.2 °F | 1117.6 in. |
| August | -14 °F | -7.2 °F | 889 in. |
| September | -15.9 °F | -9.9 °F | 889 in. |
| October | -17.9 °F | -13.8 °F | 1270 in. |
| November | -21 °F | -17.8 °F | 279.4 in. |
| December | -23.9 °F | -20.2 °F | 0 in. |
| Annual | 27.1 °F | 44.5 °F | 11.53 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |