Decimal, Manitoba climate data is summarized below. Average annual temperatures range from -2.2 °C (low) to 8.4 °C (high). Annual precipitation averages 553 Millimeters. Decimal is located in USDA Plant Hardiness Zone 3a. 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 | -21.46 °C | -11.2 °C | 0 mm |
| February | -21.02 °C | -9 °C | 0 mm |
| March | -11.68 °C | 0.13 °C | 3 mm |
| April | -2.81 °C | 9.05 °C | 35 mm |
| May | 5.1 °C | 17.3 °C | 86 mm |
| June | 11.77 °C | 22.95 °C | 122 mm |
| July | 14.35 °C | 25.87 °C | 106 mm |
| August | 13.31 °C | 24.93 °C | 86 mm |
| September | 8.13 °C | 19.29 °C | 61 mm |
| October | 1.92 °C | 10.59 °C | 54 mm |
| November | -6.38 °C | 0.54 °C | 0 mm |
| December | -17.44 °C | -9.3 °C | 0 mm |
| Annual | -2.2 °C | 8.4 °C | 553 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3a : -40°C to -37.2°C |
| Current Drought Conditions | Normal |