Milestone, Saskatchewan climate data is summarized below. Average annual temperatures range from 27.3 °F (low) to 49 °F (high). Annual precipitation averages 15.4 Inches. Milestone 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 | -27.6 °F | -22.2 °F | 0 in. |
| February | -27.8 °F | -22 °F | 0 in. |
| March | -23.4 °F | -17.6 °F | 0 in. |
| April | -19.3 °F | -12.3 °F | 863.6 in. |
| May | -15.7 °F | -7.8 °F | 1752.6 in. |
| June | -12.3 °F | -5.3 °F | 2667 in. |
| July | -10.9 °F | -3.2 °F | 1600.2 in. |
| August | -11.8 °F | -3.6 °F | 1193.8 in. |
| September | -14.5 °F | -6.2 °F | 1117.6 in. |
| October | -17.9 °F | -11.3 °F | 762 in. |
| November | -22.5 °F | -16.8 °F | 0 in. |
| December | -27.1 °F | -22.2 °F | 0 in. |
| Annual | 27.3 °F | 49 °F | 15.43 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 |