South Shore, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.3 °F (low) to 53.2 °F (high). Annual precipitation averages 25.6 Inches. South Shore is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.5 °F | 21.0 °F | 0.68 in. |
| February | 6.1 °F | 25.7 °F | 0.7 in. |
| March | 18.2 °F | 38.0 °F | 1.21 in. |
| April | 30.9 °F | 53.7 °F | 2.44 in. |
| May | 44.0 °F | 66.6 °F | 3.11 in. |
| June | 54.9 °F | 76.2 °F | 3.96 in. |
| July | 59.5 °F | 81.6 °F | 3.81 in. |
| August | 57.1 °F | 79.8 °F | 2.92 in. |
| September | 48.4 °F | 71.9 °F | 2.72 in. |
| October | 35.0 °F | 57.0 °F | 2.38 in. |
| November | 21.4 °F | 40.2 °F | 0.95 in. |
| December | 9.2 °F | 26.3 °F | 0.76 in. |
| Annual | 32.3 °F | 53.2 °F | 25.64 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |