Mandaree, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.2 °C (low) to 11.8 °C (high). Annual precipitation averages 449.8 Millimeters. Mandaree 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 | -16.3 °C | -5.6 °C | 10.41 mm |
| February | -14 °C | -2.9 °C | 10.41 mm |
| March | -8.2 °C | 3.7 °C | 15.49 mm |
| April | -1.8 °C | 12.3 °C | 28.7 mm |
| May | 4.6 °C | 18.9 °C | 68.83 mm |
| June | 10.2 °C | 23.7 °C | 88.14 mm |
| July | 12.9 °C | 27.9 °C | 72.14 mm |
| August | 12 °C | 27.9 °C | 48.01 mm |
| September | 6.6 °C | 22.3 °C | 46.23 mm |
| October | -0.2 °C | 13.1 °C | 32.51 mm |
| November | -7.3 °C | 3.7 °C | 16 mm |
| December | -13.3 °C | -3.3 °C | 12.95 mm |
| Annual | -1.2 °C | 11.8 °C | 449.82 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |