Nett Lake, Minnesota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from -3 °C (low) to 9.8 °C (high). Annual precipitation averages 694.2 Millimeters. Nett Lake is located in USDA Plant Hardiness Zone 3b. 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 | -20.6 °C | -8.4 °C | 23.37 mm |
| February | -18.9 °C | -4.7 °C | 18.03 mm |
| March | -11.3 °C | 2.7 °C | 26.42 mm |
| April | -3.5 °C | 10.4 °C | 47.75 mm |
| May | 3.4 °C | 18.1 °C | 79.25 mm |
| June | 9.2 °C | 23.1 °C | 103.38 mm |
| July | 11.7 °C | 25.3 °C | 100.58 mm |
| August | 10.6 °C | 24.4 °C | 80.26 mm |
| September | 6.2 °C | 19.3 °C | 84.84 mm |
| October | -0.1 °C | 11 °C | 63.75 mm |
| November | -7.3 °C | 1.7 °C | 39.37 mm |
| December | -15.6 °C | -5.6 °C | 27.18 mm |
| Annual | -3 °C | 9.8 °C | 694.18 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 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3a : -40°C to -37.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |