Saint-Prosper, Quebec climate data is summarized below. Average annual temperatures range from -0.8 °C (low) to 9.7 °C (high). Annual precipitation averages 243 Millimeters. Saint-Prosper is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.27 °C | -5.95 °C | 0 mm |
| February | -15.58 °C | -5.08 °C | 0 mm |
| March | -10.44 °C | 0.3 °C | 0 mm |
| April | -2.57 °C | 8.08 °C | 12 mm |
| May | 4.82 °C | 17.06 °C | 27 mm |
| June | 10.04 °C | 21.59 °C | 35 mm |
| July | 13.06 °C | 24.44 °C | 57 mm |
| August | 12.07 °C | 23.51 °C | 49 mm |
| September | 7.46 °C | 19.05 °C | 25 mm |
| October | 2.29 °C | 11.63 °C | 23 mm |
| November | -3.35 °C | 4.63 °C | 15 mm |
| December | -11.3 °C | -3.16 °C | 0 mm |
| Annual | -0.8 °C | 9.7 °C | 243 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |