Hackensack, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.9 °C (low) to 10.1 °C (high). Annual precipitation averages 690.1 Millimeters. Hackensack 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 | -18.5 °C | -7.9 °C | 16.76 mm |
| February | -16.9 °C | -4.6 °C | 17.78 mm |
| March | -9.3 °C | 2.5 °C | 31.75 mm |
| April | -1.4 °C | 10.5 °C | 54.61 mm |
| May | 5.8 °C | 18.1 °C | 82.55 mm |
| June | 11.7 °C | 23.1 °C | 106.68 mm |
| July | 14.4 °C | 25.7 °C | 103.63 mm |
| August | 13.1 °C | 24.7 °C | 79.25 mm |
| September | 8.4 °C | 19.8 °C | 76.45 mm |
| October | 1.5 °C | 11.6 °C | 68.58 mm |
| November | -5.9 °C | 2.4 °C | 28.96 mm |
| December | -13.7 °C | -4.9 °C | 23.11 mm |
| Annual | -0.9 °C | 10.1 °C | 690.11 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 | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |