Lake Andes, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.8 °F (low) to 60.5 °F (high). Annual precipitation averages 25 Inches. Lake Andes 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 | 10.5 °F | 31.7 °F | 0.52 in. |
| February | 14.3 °F | 36.4 °F | 0.73 in. |
| March | 24.1 °F | 48.2 °F | 1.16 in. |
| April | 35.0 °F | 60.1 °F | 3.14 in. |
| May | 46.9 °F | 71.3 °F | 3.74 in. |
| June | 57.9 °F | 81.5 °F | 3.67 in. |
| July | 63.1 °F | 87.9 °F | 2.69 in. |
| August | 61.0 °F | 85.9 °F | 3.01 in. |
| September | 51.5 °F | 78.1 °F | 2.56 in. |
| October | 37.9 °F | 63.1 °F | 2.19 in. |
| November | 25.0 °F | 47.6 °F | 0.89 in. |
| December | 14.6 °F | 34.7 °F | 0.69 in. |
| Annual | 36.8 °F | 60.5 °F | 24.99 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 |