Decimal, Manitoba climate data is summarized below. Average annual temperatures range from 28.1 °F (low) to 47.2 °F (high). Annual precipitation averages 21.8 Inches. 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 | -29.7 °F | -24 °F | 0 in. |
| February | -29.5 °F | -22.8 °F | 0 in. |
| March | -24.3 °F | -17.7 °F | 76.2 in. |
| April | -19.3 °F | -12.8 °F | 889 in. |
| May | -14.9 °F | -8.2 °F | 2184.4 in. |
| June | -11.2 °F | -5 °F | 3098.8 in. |
| July | -9.8 °F | -3.4 °F | 2692.4 in. |
| August | -10.4 °F | -3.9 °F | 2184.4 in. |
| September | -13.3 °F | -7.1 °F | 1549.4 in. |
| October | -16.7 °F | -11.9 °F | 1371.6 in. |
| November | -21.3 °F | -17.5 °F | 0 in. |
| December | -27.5 °F | -22.9 °F | 0 in. |
| Annual | 28.1 °F | 47.2 °F | 21.78 in. |
| 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°F to -35°F |
| Current Drought Conditions | Normal |