Willowbrook, Saskatchewan climate data is summarized below. Average annual temperatures range from 27.2 °F (low) to 45.6 °F (high). Annual precipitation averages 18.5 Inches. Willowbrook 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -28.2 °F | -23.4 °F | 0 in. |
| February | -28.3 °F | -23.1 °F | 0 in. |
| March | -24.1 °F | -18.7 °F | 0 in. |
| April | -19.3 °F | -13.3 °F | 685.8 in. |
| May | -15.4 °F | -8.5 °F | 1549.4 in. |
| June | -12.1 °F | -6 °F | 3124.2 in. |
| July | -10.6 °F | -4.4 °F | 2489.2 in. |
| August | -11.4 °F | -4.8 °F | 1905 in. |
| September | -14.1 °F | -7.3 °F | 1270 in. |
| October | -17.4 °F | -12.1 °F | 914.4 in. |
| November | -22.4 °F | -18.1 °F | 0 in. |
| December | -27.7 °F | -23.4 °F | 0 in. |
| Annual | 27.2 °F | 45.6 °F | 18.5 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| 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 |