Harcus, Manitoba climate data is summarized below. Average annual temperatures range from -2.5 °C (low) to 7.8 °C (high). Annual precipitation averages 474 Millimeters. Harcus 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. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.95 °C | -10.86 °C | 0 mm |
| February | -20.96 °C | -9.86 °C | 0 mm |
| March | -12.04 °C | -1.41 °C | 2 mm |
| April | -2.65 °C | 8.17 °C | 22 mm |
| May | 4.51 °C | 15.87 °C | 83 mm |
| June | 11 °C | 21.73 °C | 114 mm |
| July | 13.86 °C | 24.88 °C | 82 mm |
| August | 12.88 °C | 24.23 °C | 82 mm |
| September | 8.16 °C | 19.26 °C | 44 mm |
| October | 1.96 °C | 10.87 °C | 45 mm |
| November | -6.65 °C | 0.7 °C | 0 mm |
| December | -18.5 °C | -9.78 °C | 0 mm |
| Annual | -2.5 °C | 7.8 °C | 474 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 |