Running Water, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.7 °F (low) to 60.7 °F (high). Annual precipitation averages 25.3 Inches. Running Water is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.9 °F | 31.2 °F | 0.49 in. |
| February | 13.3 °F | 36.0 °F | 0.7 in. |
| March | 24.0 °F | 47.8 °F | 1.29 in. |
| April | 35.1 °F | 61.0 °F | 2.95 in. |
| May | 47.2 °F | 72.2 °F | 3.79 in. |
| June | 58.2 °F | 82.6 °F | 3.57 in. |
| July | 63.2 °F | 88.0 °F | 3.06 in. |
| August | 61.0 °F | 85.9 °F | 3.17 in. |
| September | 51.4 °F | 78.1 °F | 2.5 in. |
| October | 37.8 °F | 63.9 °F | 2.23 in. |
| November | 25.0 °F | 47.6 °F | 0.92 in. |
| December | 14.5 °F | 34.6 °F | 0.58 in. |
| Annual | 36.7 °F | 60.7 °F | 25.25 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |