Gardena, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 27.2 °F (low) to 50 °F (high). Annual precipitation averages 19 Inches. Gardena is located in USDA Plant Hardiness Zone 3b. 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 | -4.2 °F | 15.4 °F | 0.56 in. |
| February | -0.5 °F | 20.4 °F | 0.53 in. |
| March | 12.8 °F | 32.9 °F | 0.76 in. |
| April | 27.8 °F | 51.9 °F | 0.94 in. |
| May | 40.3 °F | 65.7 °F | 2.45 in. |
| June | 51.5 °F | 74.5 °F | 3.96 in. |
| July | 55.4 °F | 79.7 °F | 2.9 in. |
| August | 52.7 °F | 79.9 °F | 2.35 in. |
| September | 42.9 °F | 70.1 °F | 1.61 in. |
| October | 29.7 °F | 53.6 °F | 1.42 in. |
| November | 15.3 °F | 34.8 °F | 0.82 in. |
| December | 2.3 °F | 20.7 °F | 0.7 in. |
| Annual | 27.2 °F | 50 °F | 19 in. |
| 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 3b : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |