Bruce, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.1 °C (low) to 12 °C (high). Annual precipitation averages 845.3 Millimeters. Bruce 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 | -16 °C | -5.1 °C | 27.43 mm |
| February | -14.5 °C | -2.3 °C | 25.65 mm |
| March | -7.7 °C | 4.4 °C | 43.18 mm |
| April | -0.3 °C | 12.4 °C | 74.17 mm |
| May | 6.3 °C | 19.7 °C | 101.09 mm |
| June | 11.9 °C | 24.6 °C | 114.81 mm |
| July | 14.3 °C | 26.7 °C | 102.36 mm |
| August | 12.9 °C | 25.7 °C | 103.38 mm |
| September | 8.6 °C | 21.3 °C | 90.68 mm |
| October | 1.9 °C | 13.7 °C | 82.3 mm |
| November | -4.6 °C | 4.7 °C | 45.97 mm |
| December | -11.6 °C | -2.3 °C | 34.29 mm |
| Annual | 0.1 °C | 12 °C | 845.31 mm |
| 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 : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |