Lawton, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2 °C (low) to 9.1 °C (high). Annual precipitation averages 529.3 Millimeters. Lawton 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 | -19.7 °C | -10.1 °C | 12.19 mm |
| February | -17.9 °C | -7.3 °C | 11.43 mm |
| March | -10.6 °C | -0.5 °C | 18.29 mm |
| April | -1.9 °C | 9.6 °C | 24.89 mm |
| May | 5.3 °C | 17.8 °C | 74.17 mm |
| June | 11.6 °C | 23 °C | 99.31 mm |
| July | 13.9 °C | 25.7 °C | 90.68 mm |
| August | 12.6 °C | 25.4 °C | 66.8 mm |
| September | 7.2 °C | 20.2 °C | 51.05 mm |
| October | 0 °C | 11.3 °C | 41.4 mm |
| November | -8.2 °C | 1.1 °C | 21.59 mm |
| December | -15.7 °C | -6.9 °C | 17.53 mm |
| Annual | -2 °C | 9.1 °C | 529.33 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |