Radisson, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.9 °F (low) to 52.6 °F (high). Annual precipitation averages 34.5 Inches. Radisson is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °F | 21.8 °F | 1.09 in. |
| February | 4.3 °F | 27.2 °F | 1.09 in. |
| March | 16.6 °F | 39.3 °F | 1.69 in. |
| April | 29.8 °F | 52.9 °F | 3.0 in. |
| May | 41.9 °F | 66.5 °F | 4.0 in. |
| June | 51.9 °F | 75.4 °F | 4.65 in. |
| July | 56.3 °F | 79.3 °F | 4.33 in. |
| August | 53.9 °F | 77.2 °F | 3.97 in. |
| September | 46.5 °F | 69.6 °F | 3.92 in. |
| October | 34.8 °F | 55.5 °F | 3.45 in. |
| November | 22.9 °F | 39.7 °F | 1.91 in. |
| December | 10.2 °F | 27.0 °F | 1.44 in. |
| Annual | 30.9 °F | 52.6 °F | 34.54 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |