Crocker, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.5 °C (low) to 11.7 °C (high). Annual precipitation averages 602.7 Millimeters. Crocker is located in USDA Plant Hardiness Zone 4b. 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 | -16.1 °C | -6.1 °C | 15.24 mm |
| February | -14.1 °C | -3.4 °C | 16 mm |
| March | -7.4 °C | 3.5 °C | 25.65 mm |
| April | -0.2 °C | 11.9 °C | 55.63 mm |
| May | 7.1 °C | 19.1 °C | 79.76 mm |
| June | 13.1 °C | 24.5 °C | 100.33 mm |
| July | 15.7 °C | 27.3 °C | 90.42 mm |
| August | 14.4 °C | 26.5 °C | 64.26 mm |
| September | 9.6 °C | 22.1 °C | 62.48 mm |
| October | 1.9 °C | 13.6 °C | 56.39 mm |
| November | -5.7 °C | 4.5 °C | 19.81 mm |
| December | -12.3 °C | -3 °C | 16.76 mm |
| Annual | 0.5 °C | 11.7 °C | 602.73 mm |
| 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |