Midland, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34 °F (low) to 60.8 °F (high). Annual precipitation averages 18.1 Inches. Midland 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.1 °F | 32.8 °F | 0.35 in. |
| February | 12.5 °F | 37.2 °F | 0.49 in. |
| March | 21.9 °F | 48.0 °F | 0.97 in. |
| April | 31.8 °F | 59.5 °F | 1.82 in. |
| May | 43.8 °F | 69.7 °F | 3.03 in. |
| June | 54.4 °F | 80.4 °F | 3.33 in. |
| July | 60.7 °F | 88.6 °F | 2.44 in. |
| August | 58.5 °F | 87.9 °F | 1.89 in. |
| September | 48.0 °F | 78.9 °F | 1.48 in. |
| October | 34.3 °F | 62.9 °F | 1.49 in. |
| November | 21.1 °F | 47.7 °F | 0.46 in. |
| December | 11.7 °F | 35.4 °F | 0.34 in. |
| Annual | 34 °F | 60.8 °F | 18.09 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |