Woodruff, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 10.6 °C (high). Annual precipitation averages 849.1 Millimeters. Woodruff 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. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.3 °C | -6 °C | 31.5 mm |
| February | -15.7 °C | -3.3 °C | 27.94 mm |
| March | -10.1 °C | 3.1 °C | 42.42 mm |
| April | -2.7 °C | 10.1 °C | 72.39 mm |
| May | 4.9 °C | 18.2 °C | 93.98 mm |
| June | 10.7 °C | 23.2 °C | 112.78 mm |
| July | 13.1 °C | 25.4 °C | 103.12 mm |
| August | 11.9 °C | 24.2 °C | 91.19 mm |
| September | 7.8 °C | 19.9 °C | 92.46 mm |
| October | 1.1 °C | 11.9 °C | 90.17 mm |
| November | -5.2 °C | 3.5 °C | 51.31 mm |
| December | -12.2 °C | -3.3 °C | 39.88 mm |
| Annual | -1.1 °C | 10.6 °C | 849.14 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°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 |