Herrick, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 15.2 °C (high). Annual precipitation averages 675.6 Millimeters. Herrick 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 | -11.6 °C | 0.2 °C | 14.48 mm |
| February | -9.6 °C | 2.5 °C | 19.05 mm |
| March | -4.7 °C | 8.5 °C | 32 mm |
| April | 1 °C | 14.2 °C | 76.2 mm |
| May | 7.4 °C | 20.6 °C | 101.85 mm |
| June | 13.4 °C | 26.3 °C | 109.22 mm |
| July | 16.7 °C | 30.4 °C | 77.72 mm |
| August | 15.4 °C | 29.2 °C | 80.26 mm |
| September | 10.2 °C | 24.7 °C | 71.12 mm |
| October | 2.6 °C | 16.5 °C | 54.86 mm |
| November | -4.3 °C | 8.2 °C | 19.81 mm |
| December | -9.5 °C | 1.6 °C | 19.05 mm |
| Annual | 2.3 °C | 15.2 °C | 675.62 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |