Napinka, Manitoba climate data is summarized below. Average annual temperatures range from 28.5 °F (low) to 48.7 °F (high). Annual precipitation averages 23.1 Inches. Napinka 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. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -28.4 °F | -22.7 °F | 0 in. |
| February | -28.1 °F | -22.4 °F | 0 in. |
| March | -23.2 °F | -17.4 °F | 152.4 in. |
| April | -18.6 °F | -12.1 °F | 1320.8 in. |
| May | -15 °F | -8 °F | 2870.2 in. |
| June | -11.6 °F | -5.2 °F | 3200.4 in. |
| July | -10.2 °F | -3.5 °F | 3073.4 in. |
| August | -11 °F | -3.6 °F | 1701.8 in. |
| September | -13.7 °F | -6.3 °F | 1498.6 in. |
| October | -17.3 °F | -11.1 °F | 965.2 in. |
| November | -22 °F | -16.8 °F | 101.6 in. |
| December | -27.4 °F | -22.5 °F | 0 in. |
| Annual | 28.5 °F | 48.7 °F | 23.08 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 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |