Miller, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 33.8 °F (low) to 56.4 °F (high). Annual precipitation averages 22 Inches. 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 | 5.9 °F | 25.3 °F | 0.46 in. |
| February | 9.6 °F | 30.5 °F | 0.66 in. |
| March | 20.3 °F | 42.3 °F | 0.99 in. |
| April | 32.0 °F | 56.3 °F | 2.22 in. |
| May | 44.7 °F | 68.3 °F | 3.67 in. |
| June | 55.7 °F | 78.3 °F | 3.79 in. |
| July | 60.8 °F | 85.0 °F | 2.8 in. |
| August | 58.4 °F | 83.1 °F | 2.12 in. |
| September | 49.1 °F | 74.8 °F | 2.03 in. |
| October | 35.3 °F | 59.4 °F | 2.0 in. |
| November | 22.0 °F | 43.8 °F | 0.66 in. |
| December | 11.4 °F | 30.0 °F | 0.56 in. |
| Annual | 33.8 °F | 56.4 °F | 21.96 in. |
| 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 : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |