Mont-Joli, Quebec climate data is summarized below. Average annual temperatures range from 0.4 °C (low) to 8 °C (high). Annual precipitation averages 736 Millimeters. Mont-Joli is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.93 °C | -6.76 °C | 0 mm |
| February | -13.34 °C | -6.08 °C | 0 mm |
| March | -9.93 °C | -1.64 °C | 0 mm |
| April | -1.53 °C | 5.66 °C | 51 mm |
| May | 4.82 °C | 13.62 °C | 76 mm |
| June | 10.04 °C | 18.98 °C | 112 mm |
| July | 13.88 °C | 22.49 °C | 110 mm |
| August | 13.37 °C | 21.72 °C | 103 mm |
| September | 8.87 °C | 16.88 °C | 103 mm |
| October | 3.64 °C | 10.11 °C | 102 mm |
| November | -1.7 °C | 3.9 °C | 73 mm |
| December | -9.53 °C | -3.3 °C | 6 mm |
| Annual | 0.4 °C | 8 °C | 736 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |