Selkirk, Manitoba climate data is summarized below. Average annual temperatures range from -1.8 °C (low) to 8.3 °C (high). Annual precipitation averages 521 Millimeters. Selkirk 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 | -20.59 °C | -11.45 °C | 0 mm |
| February | -19.89 °C | -9.7 °C | 0 mm |
| March | -10.46 °C | -0.3 °C | 1 mm |
| April | -1.73 °C | 9.29 °C | 30 mm |
| May | 5.1 °C | 16.75 °C | 96 mm |
| June | 11.6 °C | 22.54 °C | 128 mm |
| July | 14.18 °C | 25.45 °C | 97 mm |
| August | 13.2 °C | 24.78 °C | 76 mm |
| September | 8.51 °C | 19.8 °C | 47 mm |
| October | 2.16 °C | 11.2 °C | 46 mm |
| November | -6.42 °C | 0.99 °C | 0 mm |
| December | -17.12 °C | -9.62 °C | 0 mm |
| Annual | -1.8 °C | 8.3 °C | 521 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |