Orient, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 32.8 °F (low) to 55.8 °F (high). Annual precipitation averages 21.7 Inches. Orient 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 | 4.6 °F | 23.8 °F | 0.48 in. |
| February | 8.2 °F | 28.8 °F | 0.66 in. |
| March | 19.6 °F | 41.3 °F | 0.92 in. |
| April | 31.3 °F | 56.2 °F | 2.09 in. |
| May | 44.0 °F | 68.5 °F | 3.37 in. |
| June | 54.9 °F | 78.4 °F | 3.52 in. |
| July | 59.7 °F | 84.6 °F | 3.32 in. |
| August | 57.4 °F | 83.1 °F | 2.3 in. |
| September | 47.9 °F | 74.6 °F | 2.07 in. |
| October | 34.4 °F | 58.9 °F | 1.72 in. |
| November | 21.1 °F | 42.4 °F | 0.6 in. |
| December | 10.2 °F | 28.7 °F | 0.61 in. |
| Annual | 32.8 °F | 55.8 °F | 21.66 in. |
| 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 : -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 |