Lake City, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.9 °F (low) to 51.5 °F (high). Annual precipitation averages 25 Inches. Lake City is located in USDA Plant Hardiness Zone 4a. 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 | 1.7 °F | 20.0 °F | 0.63 in. |
| February | 5.3 °F | 24.6 °F | 0.65 in. |
| March | 17.1 °F | 36.4 °F | 1.02 in. |
| April | 31.1 °F | 51.1 °F | 2.08 in. |
| May | 44.8 °F | 64.6 °F | 3.09 in. |
| June | 56.1 °F | 74.7 °F | 4.37 in. |
| July | 60.8 °F | 79.6 °F | 4.05 in. |
| August | 59.3 °F | 78.4 °F | 2.68 in. |
| September | 50.4 °F | 69.8 °F | 2.53 in. |
| October | 36.5 °F | 54.9 °F | 2.3 in. |
| November | 22.3 °F | 38.7 °F | 0.79 in. |
| December | 9.2 °F | 25.3 °F | 0.76 in. |
| Annual | 32.9 °F | 51.5 °F | 24.95 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 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |