Devon, Alberta climate data is summarized below. Average annual temperatures range from 28.3 °F (low) to 47.8 °F (high). Annual precipitation averages 17.3 Inches. Devon 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 | -25.8 °F | -21 °F | 0 in. |
| February | -25.4 °F | -20.2 °F | 0 in. |
| March | -22.9 °F | -17.4 °F | 0 in. |
| April | -19 °F | -12.9 °F | 863.6 in. |
| May | -15.7 °F | -8.2 °F | 1828.8 in. |
| June | -13 °F | -6.2 °F | 2235.2 in. |
| July | -11.6 °F | -4.6 °F | 2844.8 in. |
| August | -12.5 °F | -5 °F | 1625.6 in. |
| September | -15 °F | -7.3 °F | 990.6 in. |
| October | -17.8 °F | -11.8 °F | 787.4 in. |
| November | -22.1 °F | -18.1 °F | 0 in. |
| December | -26.5 °F | -22 °F | 0 in. |
| Annual | 28.3 °F | 47.8 °F | 17.32 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |