White River, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.9 °C (low) to 16.2 °C (high). Annual precipitation averages 518.7 Millimeters. White River is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.2 °C | 1.4 °C | 11.68 mm |
| February | -9.6 °C | 3.3 °C | 15.49 mm |
| March | -4.8 °C | 9.4 °C | 27.43 mm |
| April | 0.3 °C | 14.8 °C | 58.42 mm |
| May | 6.6 °C | 21.1 °C | 85.85 mm |
| June | 12.6 °C | 27.2 °C | 89.92 mm |
| July | 16.4 °C | 31.7 °C | 64.26 mm |
| August | 15.2 °C | 31.1 °C | 52.07 mm |
| September | 9.7 °C | 26.2 °C | 42.42 mm |
| October | 2.4 °C | 17.3 °C | 42.67 mm |
| November | -4.7 °C | 8.9 °C | 16 mm |
| December | -10 °C | 2.1 °C | 12.45 mm |
| Annual | 1.9 °C | 16.2 °C | 518.66 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |