Park River, 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 10.1 °C (high). Annual precipitation averages 547.9 Millimeters. Park River 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 | -19.1 °C | -9.5 °C | 13.21 mm |
| February | -17.1 °C | -6.6 °C | 13.21 mm |
| March | -9.7 °C | 0.3 °C | 22.61 mm |
| April | -1.3 °C | 10.9 °C | 25.65 mm |
| May | 5.7 °C | 19.2 °C | 82.8 mm |
| June | 12.3 °C | 24.2 °C | 101.09 mm |
| July | 14.3 °C | 26.8 °C | 84.07 mm |
| August | 12.8 °C | 26.4 °C | 67.56 mm |
| September | 7.7 °C | 21.6 °C | 52.58 mm |
| October | 0.8 °C | 12.6 °C | 43.94 mm |
| November | -7.4 °C | 1.9 °C | 22.1 mm |
| December | -14.9 °C | -6.2 °C | 19.05 mm |
| Annual | -1.3 °C | 10.1 °C | 547.87 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |