Alonsa, Manitoba climate data is summarized below. Average annual temperatures range from -2.6 °C (low) to 8 °C (high). Annual precipitation averages 482 Millimeters. 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 | -21.06 °C | -10.84 °C | 0 mm |
| February | -21.1 °C | -9.79 °C | 0 mm |
| March | -12.09 °C | -1.23 °C | 2 mm |
| April | -2.57 °C | 8.32 °C | 22 mm |
| May | 4.54 °C | 16.23 °C | 82 mm |
| June | 11.06 °C | 22.04 °C | 117 mm |
| July | 13.9 °C | 25.21 °C | 83 mm |
| August | 12.67 °C | 24.53 °C | 84 mm |
| September | 7.74 °C | 19.46 °C | 44 mm |
| October | 1.55 °C | 10.94 °C | 48 mm |
| November | -7.07 °C | 0.59 °C | 0 mm |
| December | -18.66 °C | -9.86 °C | 0 mm |
| Annual | -2.6 °C | 8 °C | 482 mm |
| 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 : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |