Aurora, South Dakota has a Humid Continental Hot Summers With Dry Winters climate (Köppen classification: Dwa). Average annual temperatures range from 0.7 °C (low) to 12.2 °C (high). Annual precipitation averages 666.5 Millimeters. Aurora 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 | -15.4 °C | -5.2 °C | 13.72 mm |
| February | -13.3 °C | -2.6 °C | 15.75 mm |
| March | -6.7 °C | 4.2 °C | 31.75 mm |
| April | 0.1 °C | 12.3 °C | 60.71 mm |
| May | 7.4 °C | 19.3 °C | 89.15 mm |
| June | 13.6 °C | 24.9 °C | 108.71 mm |
| July | 15.7 °C | 27.4 °C | 90.68 mm |
| August | 14.1 °C | 26.1 °C | 82.55 mm |
| September | 9.1 °C | 22.2 °C | 76.71 mm |
| October | 1.6 °C | 14.3 °C | 53.09 mm |
| November | -5.7 °C | 5.3 °C | 24.38 mm |
| December | -12.1 °C | -2.3 °C | 19.3 mm |
| Annual | 0.7 °C | 12.2 °C | 666.5 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dwa - Humid Continental Hot Summers With Dry Winters |