Amenia, 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 11.1 °C (high). Annual precipitation averages 595.6 Millimeters. Amenia 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 | -18.4 °C | -8.4 °C | 12.19 mm |
| February | -16.1 °C | -5.4 °C | 12.45 mm |
| March | -8.5 °C | 1.6 °C | 23.88 mm |
| April | -0.4 °C | 12 °C | 33.53 mm |
| May | 6.8 °C | 20.2 °C | 80.77 mm |
| June | 13.1 °C | 25.1 °C | 103.89 mm |
| July | 15 °C | 27.3 °C | 96.77 mm |
| August | 13.4 °C | 26.9 °C | 66.8 mm |
| September | 8.4 °C | 22.3 °C | 70.87 mm |
| October | 1.6 °C | 13.5 °C | 57.4 mm |
| November | -6.5 °C | 3.4 °C | 18.29 mm |
| December | -13.8 °C | -4.8 °C | 18.8 mm |
| Annual | -0.5 °C | 11.1 °C | 595.64 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |