Parshall, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.3 °C (low) to 11.3 °C (high). Annual precipitation averages 436.4 Millimeters. Parshall 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 | -17.4 °C | -6.9 °C | 9.4 mm |
| February | -15.3 °C | -4.4 °C | 8.64 mm |
| March | -8.7 °C | 2.4 °C | 13.97 mm |
| April | -2.1 °C | 12.2 °C | 26.42 mm |
| May | 5.1 °C | 19 °C | 65.28 mm |
| June | 11 °C | 23.7 °C | 100.08 mm |
| July | 13.6 °C | 27.5 °C | 61.98 mm |
| August | 12.3 °C | 27.6 °C | 43.94 mm |
| September | 7 °C | 22.1 °C | 49.28 mm |
| October | 0.2 °C | 13 °C | 30.99 mm |
| November | -7.3 °C | 3.1 °C | 14.73 mm |
| December | -13.6 °C | -4.3 °C | 11.68 mm |
| Annual | -1.3 °C | 11.3 °C | 436.39 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 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |