Morningside, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.5 °F (low) to 57.1 °F (high). Annual precipitation averages 23.6 Inches. Morningside 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 | 5.9 °F | 25.4 °F | 0.56 in. |
| February | 10.0 °F | 30.8 °F | 0.68 in. |
| March | 21.3 °F | 43.0 °F | 0.89 in. |
| April | 33.2 °F | 57.4 °F | 2.26 in. |
| May | 46.2 °F | 69.5 °F | 3.27 in. |
| June | 57.2 °F | 79.6 °F | 3.98 in. |
| July | 61.8 °F | 85.5 °F | 3.22 in. |
| August | 59.1 °F | 83.5 °F | 2.55 in. |
| September | 49.7 °F | 75.7 °F | 2.5 in. |
| October | 35.6 °F | 60.8 °F | 2.27 in. |
| November | 22.4 °F | 44.1 °F | 0.8 in. |
| December | 11.3 °F | 30.4 °F | 0.61 in. |
| Annual | 34.5 °F | 57.1 °F | 23.59 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |