Milestone, Saskatchewan climate data is summarized below. Average annual temperatures range from -2.6 °C (low) to 9.4 °C (high). Annual precipitation averages 392 Millimeters. 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 | -17.69 °C | -7.87 °C | 0 mm |
| February | -18.1 °C | -7.56 °C | 0 mm |
| March | -10.09 °C | 0.25 °C | 0 mm |
| April | -2.66 °C | 9.79 °C | 34 mm |
| May | 3.75 °C | 17.94 °C | 69 mm |
| June | 9.84 °C | 22.51 °C | 105 mm |
| July | 12.42 °C | 26.25 °C | 63 mm |
| August | 10.85 °C | 25.46 °C | 47 mm |
| September | 5.92 °C | 20.82 °C | 44 mm |
| October | -0.24 °C | 11.68 °C | 30 mm |
| November | -8.54 °C | 1.85 °C | 0 mm |
| December | -16.71 °C | -7.92 °C | 0 mm |
| Annual | -2.6 °C | 9.4 °C | 392 mm |
| 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 : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |