Epping, North Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.9 °C (low) to 10.9 °C (high). Annual precipitation averages 406.4 Millimeters. Epping 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 | -17.7 °C | -7 °C | 14.48 mm |
| February | -15.2 °C | -4.3 °C | 10.16 mm |
| March | -9 °C | 2.4 °C | 17.53 mm |
| April | -2.2 °C | 11.7 °C | 27.69 mm |
| May | 4.3 °C | 18.4 °C | 56.39 mm |
| June | 10.1 °C | 23.2 °C | 81.53 mm |
| July | 12.7 °C | 27.1 °C | 63.5 mm |
| August | 11.6 °C | 27.5 °C | 41.4 mm |
| September | 6.1 °C | 21.7 °C | 37.34 mm |
| October | -0.8 °C | 12.4 °C | 24.38 mm |
| November | -8.1 °C | 2.7 °C | 14.99 mm |
| December | -14.6 °C | -4.5 °C | 17.02 mm |
| Annual | -1.9 °C | 10.9 °C | 406.41 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 | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |