Hitchcock, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 33.4 °F (low) to 56.1 °F (high). Annual precipitation averages 23.5 Inches. Hitchcock 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 | 4.3 °F | 23.9 °F | 0.54 in. |
| February | 8.5 °F | 29.4 °F | 0.7 in. |
| March | 20.3 °F | 41.9 °F | 1.0 in. |
| April | 32.3 °F | 56.6 °F | 2.41 in. |
| May | 45.2 °F | 69.0 °F | 3.37 in. |
| June | 56.1 °F | 78.9 °F | 3.79 in. |
| July | 60.9 °F | 84.6 °F | 3.25 in. |
| August | 58.2 °F | 82.8 °F | 2.71 in. |
| September | 48.6 °F | 74.8 °F | 2.33 in. |
| October | 34.9 °F | 59.6 °F | 2.02 in. |
| November | 21.4 °F | 43.1 °F | 0.73 in. |
| December | 10.0 °F | 29.0 °F | 0.64 in. |
| Annual | 33.4 °F | 56.1 °F | 23.49 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |