Sioux Valley, Manitoba climate data is summarized below. Average annual temperatures range from 27.3 °F (low) to 48 °F (high). Annual precipitation averages 20.5 Inches. Sioux Valley 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -28.9 °F | -23.4 °F | 0 in. |
| February | -28.7 °F | -22.8 °F | 0 in. |
| March | -24 °F | -17.8 °F | 177.8 in. |
| April | -18.8 °F | -12.3 °F | 635 in. |
| May | -15.2 °F | -7.9 °F | 1854.2 in. |
| June | -11.8 °F | -5.1 °F | 3302 in. |
| July | -10.4 °F | -3.5 °F | 2921 in. |
| August | -11.3 °F | -3.6 °F | 2514.6 in. |
| September | -14 °F | -6.3 °F | 1117.6 in. |
| October | -17.6 °F | -11.2 °F | 711.2 in. |
| November | -22.3 °F | -17.2 °F | 0 in. |
| December | -27.9 °F | -23.1 °F | 0 in. |
| Annual | 27.3 °F | 48 °F | 20.51 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Normal |