Herreid, South Dakota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from 0.2 °C (low) to 12.9 °C (high). Annual precipitation averages 474.2 Millimeters. Herreid 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.8 °C | -5 °C | 9.65 mm |
| February | -13.5 °C | -2.3 °C | 11.43 mm |
| March | -7.2 °C | 4.7 °C | 19.05 mm |
| April | -0.4 °C | 13.4 °C | 34.54 mm |
| May | 6.4 °C | 20.1 °C | 69.85 mm |
| June | 12.4 °C | 25.4 °C | 86.87 mm |
| July | 15.3 °C | 29.1 °C | 78.99 mm |
| August | 14 °C | 28.7 °C | 54.36 mm |
| September | 8.7 °C | 23.6 °C | 42.93 mm |
| October | 1.3 °C | 14.6 °C | 42.67 mm |
| November | -6.3 °C | 5.2 °C | 12.95 mm |
| December | -12.4 °C | -2.2 °C | 10.92 mm |
| Annual | 0.2 °C | 12.9 °C | 474.21 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |