Shellbrook, Saskatchewan climate data is summarized below. Average annual temperatures range from -3.6 °C (low) to 7.5 °C (high). Annual precipitation averages 412 Millimeters. Shellbrook is located in USDA Plant Hardiness Zone 2b. 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 | -19.59 °C | -10.29 °C | 0 mm |
| February | -19.98 °C | -9.34 °C | 0 mm |
| March | -12.54 °C | -2.2 °C | 0 mm |
| April | -3.85 °C | 7.47 °C | 26 mm |
| May | 3.3 °C | 17.48 °C | 46 mm |
| June | 9.48 °C | 22.1 °C | 119 mm |
| July | 12.32 °C | 25.07 °C | 93 mm |
| August | 10.53 °C | 24.12 °C | 57 mm |
| September | 5.54 °C | 18.89 °C | 37 mm |
| October | -0.09 °C | 9.13 °C | 34 mm |
| November | -9.27 °C | -2.09 °C | 0 mm |
| December | -18.43 °C | -11 °C | 0 mm |
| Annual | -3.6 °C | 7.5 °C | 412 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 2b : -42.8°C to -40°C |
| Current Drought Conditions | Normal |