Alonsa, Manitoba climate data is summarized below. Average annual temperatures range from 27.3 °F (low) to 46.4 °F (high). Annual precipitation averages 19 Inches. Alonsa 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 | -29.5 °F | -23.8 °F | 0 in. |
| February | -29.5 °F | -23.2 °F | 0 in. |
| March | -24.5 °F | -18.5 °F | 50.8 in. |
| April | -19.2 °F | -13.2 °F | 558.8 in. |
| May | -15.3 °F | -8.8 °F | 2082.8 in. |
| June | -11.6 °F | -5.5 °F | 2971.8 in. |
| July | -10.1 °F | -3.8 °F | 2108.2 in. |
| August | -10.7 °F | -4.2 °F | 2133.6 in. |
| September | -13.5 °F | -7 °F | 1117.6 in. |
| October | -16.9 °F | -11.7 °F | 1219.2 in. |
| November | -21.7 °F | -17.5 °F | 0 in. |
| December | -28.1 °F | -23.3 °F | 0 in. |
| Annual | 27.3 °F | 46.4 °F | 18.99 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 | Normal |