Macdonald, Manitoba climate data is summarized below. Average annual temperatures range from -1.9 °C (low) to 8.7 °C (high). Annual precipitation averages 432 Millimeters. Macdonald is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.36 °C | -11.1 °C | 0 mm |
| February | -19.49 °C | -9.71 °C | 0 mm |
| March | -9.99 °C | -0.12 °C | 6 mm |
| April | -1.48 °C | 9.79 °C | 25 mm |
| May | 5.14 °C | 17.69 °C | 73 mm |
| June | 11.59 °C | 23.13 °C | 95 mm |
| July | 13.67 °C | 25.91 °C | 88 mm |
| August | 12.59 °C | 25.52 °C | 64 mm |
| September | 7.9 °C | 20.45 °C | 43 mm |
| October | 1.56 °C | 11.63 °C | 38 mm |
| November | -6.82 °C | 1.18 °C | 0 mm |
| December | -17.1 °C | -9.6 °C | 0 mm |
| Annual | -1.9 °C | 8.7 °C | 432 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |