Bowman, North Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.5 °C (low) to 13.1 °C (high). Annual precipitation averages 419.9 Millimeters. Bowman is located in USDA Plant Hardiness Zone 4b. 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 | -13.6 °C | -2.3 °C | 11.94 mm |
| February | -11.9 °C | -0.2 °C | 13.21 mm |
| March | -7.1 °C | 5.7 °C | 19.81 mm |
| April | -1.4 °C | 12.3 °C | 32.51 mm |
| May | 4.7 °C | 18.2 °C | 67.06 mm |
| June | 10.3 °C | 23.9 °C | 81.28 mm |
| July | 13.5 °C | 28.8 °C | 56.13 mm |
| August | 12.1 °C | 28.8 °C | 36.07 mm |
| September | 6.7 °C | 23.1 °C | 37.34 mm |
| October | -0.2 °C | 14 °C | 39.62 mm |
| November | -6.7 °C | 5.8 °C | 13.46 mm |
| December | -11.9 °C | -0.4 °C | 11.43 mm |
| Annual | -0.5 °C | 13.1 °C | 419.86 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |