Oakville, Manitoba climate data is summarized below. Average annual temperatures range from 28.7 °F (low) to 47.3 °F (high). Annual precipitation averages 18.7 Inches. Oakville is located in USDA Plant Hardiness Zone 4a. 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 | -29 °F | -23.8 °F | 0 in. |
| February | -28.7 °F | -23.1 °F | 0 in. |
| March | -23.6 °F | -18.1 °F | 25.4 in. |
| April | -18.8 °F | -12.6 °F | 660.4 in. |
| May | -14.9 °F | -8.2 °F | 2286 in. |
| June | -11.3 °F | -5.1 °F | 2743.2 in. |
| July | -10 °F | -3.6 °F | 2286 in. |
| August | -10.6 °F | -3.8 °F | 1803.4 in. |
| September | -13.3 °F | -6.6 °F | 1066.8 in. |
| October | -16.8 °F | -11.4 °F | 1193.8 in. |
| November | -21.5 °F | -17.2 °F | 0 in. |
| December | -27.3 °F | -23.1 °F | 0 in. |
| Annual | 28.7 °F | 47.3 °F | 18.69 in. |
| 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 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |