Joliette, Quebec climate data is summarized below. Average annual temperatures range from 1.2 °C (low) to 10.7 °C (high). Annual precipitation averages 686 Millimeters. Joliette is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.25 °C | -6.04 °C | 2 mm |
| February | -14.5 °C | -4.97 °C | 2 mm |
| March | -8.44 °C | 1.36 °C | 16 mm |
| April | 0.15 °C | 10.42 °C | 54 mm |
| May | 7.62 °C | 18.75 °C | 63 mm |
| June | 13.04 °C | 23.32 °C | 105 mm |
| July | 15.49 °C | 25.73 °C | 142 mm |
| August | 14.55 °C | 24.69 °C | 109 mm |
| September | 9.68 °C | 20.26 °C | 64 mm |
| October | 3.98 °C | 12.61 °C | 78 mm |
| November | -2.05 °C | 5.28 °C | 39 mm |
| December | -10.51 °C | -3.11 °C | 12 mm |
| Annual | 1.2 °C | 10.7 °C | 686 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |