Vallée-Jonction, Quebec climate data is summarized below. Average annual temperatures range from 31.8 °F (low) to 49.2 °F (high). Annual precipitation averages 34.7 Inches. Vallée-Jonction 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -26.3 °F | -21.1 °F | 0 in. |
| February | -26 °F | -20.7 °F | 0 in. |
| March | -22.9 °F | -17.5 °F | 25.4 in. |
| April | -18.6 °F | -13.1 °F | 1600.2 in. |
| May | -14.8 °F | -8.3 °F | 2819.4 in. |
| June | -11.9 °F | -5.8 °F | 3378.2 in. |
| July | -10.2 °F | -4.4 °F | 4064 in. |
| August | -10.7 °F | -4.9 °F | 3606.8 in. |
| September | -13.2 °F | -7.3 °F | 2590.8 in. |
| October | -16.2 °F | -11.4 °F | 2590.8 in. |
| November | -19.5 °F | -15.2 °F | 1701.8 in. |
| December | -23.8 °F | -19.6 °F | 0 in. |
| Annual | 31.8 °F | 49.2 °F | 34.7 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |