LaMoure, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.5 °C (low) to 11.7 °C (high). Annual precipitation averages 580.4 Millimeters. LaMoure is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.5 °C | -6.9 °C | 14.48 mm |
| February | -15.3 °C | -4.1 °C | 15.75 mm |
| March | -8.2 °C | 2.9 °C | 28.45 mm |
| April | -0.9 °C | 12.3 °C | 39.62 mm |
| May | 6.6 °C | 19.8 °C | 80.77 mm |
| June | 12.8 °C | 25.2 °C | 100.08 mm |
| July | 15 °C | 27.8 °C | 91.44 mm |
| August | 13.4 °C | 27.1 °C | 60.2 mm |
| September | 8.1 °C | 22.4 °C | 62.48 mm |
| October | 0.6 °C | 13.6 °C | 50.55 mm |
| November | -6.9 °C | 3.9 °C | 17.78 mm |
| December | -13.5 °C | -3.7 °C | 18.8 mm |
| Annual | -0.5 °C | 11.7 °C | 580.4 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |