Calmar, Alberta climate data is summarized below. Average annual temperatures range from -2 °C (low) to 8.8 °C (high). Annual precipitation averages 449 Millimeters. Calmar 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 | -13.93 °C | -5.73 °C | 0 mm |
| February | -13.25 °C | -4.23 °C | 0 mm |
| March | -8.77 °C | 0.84 °C | 0 mm |
| April | -2.32 °C | 8.82 °C | 33 mm |
| May | 3.54 °C | 17 °C | 74 mm |
| June | 8.38 °C | 20.63 °C | 92 mm |
| July | 11.03 °C | 23.43 °C | 115 mm |
| August | 9.41 °C | 22.75 °C | 64 mm |
| September | 4.89 °C | 18.79 °C | 41 mm |
| October | -0.08 °C | 10.64 °C | 30 mm |
| November | -7.58 °C | -0.45 °C | 0 mm |
| December | -15.27 °C | -7.38 °C | 0 mm |
| Annual | -2 °C | 8.8 °C | 449 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 | Abnormally Dry |