Lower Post, British Columbia climate data is summarized below. Average annual temperatures range from 20.7 °F (low) to 37 °F (high). Annual precipitation averages 9 Inches. Lower Post is located in USDA Plant Hardiness Zone 2a. 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 | -29.3 °F | -24.6 °F | 0 in. |
| February | -29.1 °F | -23.4 °F | 0 in. |
| March | -28.1 °F | -22.1 °F | 0 in. |
| April | -22.4 °F | -17.2 °F | 177.8 in. |
| May | -17 °F | -11.2 °F | 736.6 in. |
| June | -13.9 °F | -7.9 °F | 939.8 in. |
| July | -12.8 °F | -6.9 °F | 1193.8 in. |
| August | -13.7 °F | -7.8 °F | 990.6 in. |
| September | -16.4 °F | -11.6 °F | 1066.8 in. |
| October | -19.2 °F | -16 °F | 685.8 in. |
| November | -25.1 °F | -21.9 °F | 0 in. |
| December | -28.5 °F | -24.4 °F | 0 in. |
| Annual | 20.7 °F | 37 °F | 8.98 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 2a : -50°F to -45°F |
| Current Drought Conditions | Normal |