Dimock, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36 °F (low) to 58.6 °F (high). Annual precipitation averages 25.3 Inches. Dimock is located in USDA Plant Hardiness Zone 5a. 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 | 8.5 °F | 27.9 °F | 0.52 in. |
| February | 12.7 °F | 33.4 °F | 0.79 in. |
| March | 23.0 °F | 45.0 °F | 1.17 in. |
| April | 34.6 °F | 58.8 °F | 2.94 in. |
| May | 47.1 °F | 70.7 °F | 3.64 in. |
| June | 58.3 °F | 81.0 °F | 3.72 in. |
| July | 62.5 °F | 86.3 °F | 3.04 in. |
| August | 60.2 °F | 84.0 °F | 2.95 in. |
| September | 50.9 °F | 76.8 °F | 2.76 in. |
| October | 37.2 °F | 61.9 °F | 2.13 in. |
| November | 23.9 °F | 45.5 °F | 0.94 in. |
| December | 13.2 °F | 32.0 °F | 0.7 in. |
| Annual | 36 °F | 58.6 °F | 25.3 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 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |