Colonsay, Saskatchewan climate data is summarized below. Average annual temperatures range from -3.1 °C (low) to 7.9 °C (high). Annual precipitation averages 453 Millimeters. Colonsay is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -19.11 °C | -9.45 °C | 0 mm |
| February | -19.68 °C | -9.41 °C | 0 mm |
| March | -11.79 °C | -1.79 °C | 0 mm |
| April | -2.77 °C | 8.61 °C | 24 mm |
| May | 4.15 °C | 18 °C | 60 mm |
| June | 10.1 °C | 21.85 °C | 125 mm |
| July | 12.71 °C | 24.55 °C | 105 mm |
| August | 10.89 °C | 23.76 °C | 59 mm |
| September | 5.86 °C | 19.3 °C | 45 mm |
| October | -0.3 °C | 10.1 °C | 35 mm |
| November | -9.05 °C | -0.57 °C | 0 mm |
| December | -18.03 °C | -9.99 °C | 0 mm |
| Annual | -3.1 °C | 7.9 °C | 453 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |