Lake Nebagamon, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 10.7 °C (high). Annual precipitation averages 838.5 Millimeters. Lake Nebagamon is located in USDA Plant Hardiness Zone 4a. 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 | -17.3 °C | -6.5 °C | 28.96 mm |
| February | -15.5 °C | -3.4 °C | 26.42 mm |
| March | -8.9 °C | 3.2 °C | 43.94 mm |
| April | -2.1 °C | 10.5 °C | 70.61 mm |
| May | 4.3 °C | 18.4 °C | 88.14 mm |
| June | 9.8 °C | 23.3 °C | 105.41 mm |
| July | 13 °C | 25.9 °C | 109.47 mm |
| August | 12.1 °C | 24.8 °C | 99.06 mm |
| September | 7.8 °C | 20.2 °C | 88.9 mm |
| October | 1.3 °C | 12.3 °C | 82.04 mm |
| November | -5.4 °C | 3.6 °C | 53.85 mm |
| December | -12.7 °C | -3.7 °C | 41.66 mm |
| Annual | -1.1 °C | 10.7 °C | 838.46 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 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |