Radisson, Quebec climate data is summarized below. Average annual temperatures range from 18.9 °F (low) to 36.9 °F (high). Annual precipitation averages 25.6 Inches. Radisson is located in USDA Plant Hardiness Zone 1a. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -32.6 °F | -27.1 °F | 0 in. |
| February | -33.9 °F | -26.4 °F | 0 in. |
| March | -31.2 °F | -22.5 °F | 0 in. |
| April | -24.2 °F | -17.6 °F | 304.8 in. |
| May | -18.7 °F | -12.7 °F | 1447.8 in. |
| June | -14.4 °F | -7.5 °F | 1879.6 in. |
| July | -12.4 °F | -6.7 °F | 3302 in. |
| August | -12.6 °F | -7.5 °F | 3784.6 in. |
| September | -14.9 °F | -10.6 °F | 3048 in. |
| October | -17.3 °F | -14.2 °F | 2006.6 in. |
| November | -21.2 °F | -18.5 °F | 762 in. |
| December | -28.4 °F | -24.1 °F | 0 in. |
| Annual | 18.9 °F | 36.9 °F | 25.62 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 1a : -60°F to -55°F |
| Current Drought Conditions | Normal |