Johnson Siding, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.5 °F (low) to 57.5 °F (high). Annual precipitation averages 21.5 Inches. Johnson Siding is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.5 °F | 37.6 °F | 0.39 in. |
| February | 13.0 °F | 38.1 °F | 0.57 in. |
| March | 20.7 °F | 46.6 °F | 1.19 in. |
| April | 28.6 °F | 53.4 °F | 2.41 in. |
| May | 38.6 °F | 62.5 °F | 4.3 in. |
| June | 48.0 °F | 73.7 °F | 3.37 in. |
| July | 54.4 °F | 81.6 °F | 3.02 in. |
| August | 52.0 °F | 80.7 °F | 2.24 in. |
| September | 43.2 °F | 72.3 °F | 1.38 in. |
| October | 31.7 °F | 58.2 °F | 1.65 in. |
| November | 21.8 °F | 46.7 °F | 0.6 in. |
| December | 13.8 °F | 38.2 °F | 0.42 in. |
| Annual | 31.5 °F | 57.5 °F | 21.54 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |