Loma, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.6 °C (low) to 8.8 °C (high). Annual precipitation averages 517.4 Millimeters. Loma 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 | -20.2 °C | -10.3 °C | 13.21 mm |
| February | -18.7 °C | -7.8 °C | 12.19 mm |
| March | -11.1 °C | -0.9 °C | 18.29 mm |
| April | -2.4 °C | 9.2 °C | 24.64 mm |
| May | 4.7 °C | 17.5 °C | 72.39 mm |
| June | 11.1 °C | 22.7 °C | 100.08 mm |
| July | 13.2 °C | 25.3 °C | 86.36 mm |
| August | 11.7 °C | 25.3 °C | 62.48 mm |
| September | 6.5 °C | 20.1 °C | 50.8 mm |
| October | -0.7 °C | 11 °C | 38.35 mm |
| November | -8.8 °C | 0.8 °C | 20.83 mm |
| December | -16.3 °C | -7.3 °C | 17.78 mm |
| Annual | -2.6 °C | 8.8 °C | 517.4 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°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 |