Grenora, North Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 28.4 °F (low) to 52.2 °F (high). Annual precipitation averages 14.8 Inches. Grenora 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.0 °F | 19.8 °F | 0.43 in. |
| February | 4.5 °F | 24.8 °F | 0.36 in. |
| March | 16.0 °F | 37.1 °F | 0.54 in. |
| April | 28.1 °F | 54.1 °F | 1.08 in. |
| May | 39.7 °F | 66.5 °F | 2.01 in. |
| June | 50.1 °F | 74.1 °F | 3.18 in. |
| July | 54.9 °F | 81.8 °F | 2.48 in. |
| August | 52.7 °F | 81.8 °F | 1.48 in. |
| September | 42.5 °F | 70.7 °F | 1.23 in. |
| October | 29.8 °F | 54.4 °F | 0.93 in. |
| November | 16.7 °F | 36.4 °F | 0.58 in. |
| December | 5.5 °F | 24.4 °F | 0.49 in. |
| Annual | 28.4 °F | 52.2 °F | 14.79 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |