Springfield, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.7 °C (low) to 15.6 °C (high). Annual precipitation averages 659.9 Millimeters. Springfield is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.3 °C | -0.9 °C | 13.72 mm |
| February | -10.3 °C | 1.8 °C | 19.3 mm |
| March | -4.4 °C | 8.6 °C | 34.29 mm |
| April | 1.8 °C | 15.7 °C | 75.18 mm |
| May | 8.6 °C | 22 °C | 98.81 mm |
| June | 14.8 °C | 27.8 °C | 92.96 mm |
| July | 17.4 °C | 30.7 °C | 76.71 mm |
| August | 16.1 °C | 29.5 °C | 80.52 mm |
| September | 10.8 °C | 25.3 °C | 67.06 mm |
| October | 3.3 °C | 17.4 °C | 57.91 mm |
| November | -3.8 °C | 8.4 °C | 25.15 mm |
| December | -9.7 °C | 1.2 °C | 18.29 mm |
| Annual | 2.7 °C | 15.6 °C | 659.9 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |