Pollock, South Dakota has a Humid Continental Hot Summers With Dry Winters climate (Köppen classification: Dwa). Average annual temperatures range from 0.3 °C (low) to 13.2 °C (high). Annual precipitation averages 454.7 Millimeters. Pollock 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.7 °C | -4.8 °C | 9.4 mm |
| February | -13.4 °C | -2 °C | 11.18 mm |
| March | -7.1 °C | 4.9 °C | 17.78 mm |
| April | -0.3 °C | 13.7 °C | 32.77 mm |
| May | 6.5 °C | 20.4 °C | 68.07 mm |
| June | 12.6 °C | 25.7 °C | 85.34 mm |
| July | 15.5 °C | 29.3 °C | 71.63 mm |
| August | 14.2 °C | 28.9 °C | 53.59 mm |
| September | 8.8 °C | 23.8 °C | 40.39 mm |
| October | 1.4 °C | 14.8 °C | 40.13 mm |
| November | -6.1 °C | 5.4 °C | 12.7 mm |
| December | -12.3 °C | -1.9 °C | 11.68 mm |
| Annual | 0.3 °C | 13.2 °C | 454.66 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dwa - Humid Continental Hot Summers With Dry Winters |