Parkston, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.1 °F (low) to 58.7 °F (high). Annual precipitation averages 25.4 Inches. Parkston 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 | 8.7 °F | 28.1 °F | 0.54 in. |
| February | 12.8 °F | 33.4 °F | 0.79 in. |
| March | 23.1 °F | 45.1 °F | 1.18 in. |
| April | 34.6 °F | 58.9 °F | 2.95 in. |
| May | 47.1 °F | 70.7 °F | 3.67 in. |
| June | 58.3 °F | 81.1 °F | 3.69 in. |
| July | 62.6 °F | 86.4 °F | 3.02 in. |
| August | 60.2 °F | 84.1 °F | 2.95 in. |
| September | 51.0 °F | 76.9 °F | 2.78 in. |
| October | 37.3 °F | 62.0 °F | 2.14 in. |
| November | 23.9 °F | 45.5 °F | 0.95 in. |
| December | 13.3 °F | 32.1 °F | 0.72 in. |
| Annual | 36.1 °F | 58.7 °F | 25.38 in. |
| 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 : -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 |