Akaska, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.6 °C (low) to 13.3 °C (high). Annual precipitation averages 484.1 Millimeters. Akaska is located in USDA Plant Hardiness Zone 4b. 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 | -15 °C | -4.3 °C | 9.65 mm |
| February | -13 °C | -1.7 °C | 13.72 mm |
| March | -6.9 °C | 5.3 °C | 19.56 mm |
| April | -0.4 °C | 13.3 °C | 41.4 mm |
| May | 6.6 °C | 20 °C | 72.9 mm |
| June | 12.6 °C | 25.6 °C | 86.36 mm |
| July | 15.7 °C | 29.4 °C | 71.63 mm |
| August | 14.4 °C | 28.7 °C | 56.9 mm |
| September | 9.2 °C | 23.8 °C | 42.93 mm |
| October | 1.7 °C | 14.7 °C | 43.94 mm |
| November | -5.6 °C | 5.8 °C | 13.21 mm |
| December | -11.7 °C | -1.6 °C | 11.94 mm |
| Annual | 0.6 °C | 13.3 °C | 484.14 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |