Killam, Alberta climate data is summarized below. Average annual temperatures range from 28.2 °F (low) to 47.9 °F (high). Annual precipitation averages 15.4 Inches. Killam 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. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -26.7 °F | -21.8 °F | 0 in. |
| February | -26.3 °F | -21.1 °F | 0 in. |
| March | -22.9 °F | -17.5 °F | 0 in. |
| April | -18.9 °F | -12.6 °F | 812.8 in. |
| May | -15.3 °F | -7.8 °F | 1320.8 in. |
| June | -12.4 °F | -5.7 °F | 2438.4 in. |
| July | -10.9 °F | -4 °F | 2184.4 in. |
| August | -11.9 °F | -4.5 °F | 1549.4 in. |
| September | -14.6 °F | -6.9 °F | 939.8 in. |
| October | -17.7 °F | -11.7 °F | 685.8 in. |
| November | -22.4 °F | -18.3 °F | 0 in. |
| December | -27.3 °F | -22.7 °F | 0 in. |
| Annual | 28.2 °F | 47.9 °F | 15.4 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 | Normal |