St. Paul, Alberta climate data is summarized below. Average annual temperatures range from -2.6 °C (low) to 8.1 °C (high). Annual precipitation averages 388 Millimeters. St. Paul is located in USDA Plant Hardiness Zone 3a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.96 °C | -7.87 °C | 0 mm |
| February | -16.23 °C | -6.36 °C | 0 mm |
| March | -10.29 °C | -0.63 °C | 0 mm |
| April | -2.24 °C | 8.36 °C | 33 mm |
| May | 3.91 °C | 17.37 °C | 43 mm |
| June | 9.27 °C | 21.55 °C | 104 mm |
| July | 11.94 °C | 24.22 °C | 99 mm |
| August | 10.19 °C | 23.3 °C | 49 mm |
| September | 5.07 °C | 18.68 °C | 32 mm |
| October | -0.01 °C | 9.72 °C | 28 mm |
| November | -8.59 °C | -1.76 °C | 0 mm |
| December | -17.13 °C | -9.34 °C | 0 mm |
| Annual | -2.6 °C | 8.1 °C | 388 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3a : -40°C to -37.2°C |
| Current Drought Conditions | Normal |