Crandon, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 10.5 °C (high). Annual precipitation averages 827.8 Millimeters. Crandon is located in USDA Plant Hardiness Zone 4b. 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 | -15.9 °C | -5.8 °C | 31.5 mm |
| February | -15.1 °C | -3.2 °C | 27.69 mm |
| March | -9.7 °C | 3.1 °C | 42.42 mm |
| April | -2.4 °C | 10.4 °C | 72.39 mm |
| May | 4.6 °C | 18 °C | 90.93 mm |
| June | 10.2 °C | 22.7 °C | 111.25 mm |
| July | 12.5 °C | 24.8 °C | 102.36 mm |
| August | 11.5 °C | 23.7 °C | 84.33 mm |
| September | 7.3 °C | 19.4 °C | 94.23 mm |
| October | 1.1 °C | 11.9 °C | 81.79 mm |
| November | -5.2 °C | 3.6 °C | 49.02 mm |
| December | -11.9 °C | -3.1 °C | 39.88 mm |
| Annual | -1.1 °C | 10.5 °C | 827.79 mm |
| 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |