Miller, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1 °C (low) to 13.6 °C (high). Annual precipitation averages 557.8 Millimeters. Miller 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.5 °C | -3.7 °C | 11.68 mm |
| February | -12.4 °C | -0.8 °C | 16.76 mm |
| March | -6.5 °C | 5.7 °C | 25.15 mm |
| April | 0 °C | 13.5 °C | 56.39 mm |
| May | 7.1 °C | 20.2 °C | 93.22 mm |
| June | 13.2 °C | 25.7 °C | 96.27 mm |
| July | 16 °C | 29.4 °C | 71.12 mm |
| August | 14.7 °C | 28.4 °C | 53.85 mm |
| September | 9.5 °C | 23.8 °C | 51.56 mm |
| October | 1.8 °C | 15.2 °C | 50.8 mm |
| November | -5.6 °C | 6.6 °C | 16.76 mm |
| December | -11.4 °C | -1.1 °C | 14.22 mm |
| Annual | 1 °C | 13.6 °C | 557.78 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |