Tamarack, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.3 °C (low) to 10.3 °C (high). Annual precipitation averages 766.6 Millimeters. Tamarack 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.9 °C | -7.2 °C | 19.3 mm |
| February | -16.1 °C | -3.9 °C | 19.3 mm |
| March | -9.2 °C | 2.9 °C | 32.26 mm |
| April | -1.9 °C | 10.4 °C | 58.42 mm |
| May | 4.6 °C | 18 °C | 89.15 mm |
| June | 10.1 °C | 23.1 °C | 118.11 mm |
| July | 12.9 °C | 25.5 °C | 111.76 mm |
| August | 11.9 °C | 24.6 °C | 96.52 mm |
| September | 7.6 °C | 20.1 °C | 81.79 mm |
| October | 1.3 °C | 11.9 °C | 76.71 mm |
| November | -5.7 °C | 2.9 °C | 35.56 mm |
| December | -13.3 °C | -4.3 °C | 27.69 mm |
| Annual | -1.3 °C | 10.3 °C | 766.57 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| 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 |