Elgin, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.8 °C (low) to 12.7 °C (high). Annual precipitation averages 461.3 Millimeters. Elgin 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 | -15.1 °C | -4 °C | 10.41 mm |
| February | -13.3 °C | -1.6 °C | 12.95 mm |
| March | -7.6 °C | 4.9 °C | 19.3 mm |
| April | -1.6 °C | 12.6 °C | 35.05 mm |
| May | 4.9 °C | 18.9 °C | 67.06 mm |
| June | 10.6 °C | 24.2 °C | 86.11 mm |
| July | 13.6 °C | 28.4 °C | 72.64 mm |
| August | 12.4 °C | 28.3 °C | 47.5 mm |
| September | 7.1 °C | 22.9 °C | 40.89 mm |
| October | -0.1 °C | 13.9 °C | 39.62 mm |
| November | -7.3 °C | 5 °C | 17.53 mm |
| December | -12.9 °C | -1.7 °C | 12.19 mm |
| Annual | -0.8 °C | 12.7 °C | 461.25 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 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |