Ninette, Manitoba climate data is summarized below. Average annual temperatures range from 27.8 °F (low) to 47.6 °F (high). Annual precipitation averages 23.8 Inches. Ninette 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 | -28.5 °F | -23.2 °F | 0 in. |
| February | -28.2 °F | -22.7 °F | 0 in. |
| March | -23.6 °F | -17.7 °F | 254 in. |
| April | -19.1 °F | -12.7 °F | 990.6 in. |
| May | -15.3 °F | -8.4 °F | 2413 in. |
| June | -11.8 °F | -5.4 °F | 3835.4 in. |
| July | -10.5 °F | -3.8 °F | 3022.6 in. |
| August | -11.3 °F | -3.9 °F | 2616.2 in. |
| September | -13.9 °F | -6.6 °F | 1346.2 in. |
| October | -17.3 °F | -11.4 °F | 838.2 in. |
| November | -22 °F | -17 °F | 0 in. |
| December | -27.3 °F | -22.8 °F | 0 in. |
| Annual | 27.8 °F | 47.6 °F | 23.75 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 |