Ward, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.1 °C (low) to 12.2 °C (high). Annual precipitation averages 694.7 Millimeters. Ward 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 | -14.8 °C | -5.2 °C | 15.49 mm |
| February | -12.7 °C | -2.7 °C | 19.05 mm |
| March | -6.3 °C | 4.1 °C | 34.8 mm |
| April | 0.4 °C | 12.4 °C | 68.07 mm |
| May | 7.7 °C | 19.5 °C | 93.98 mm |
| June | 13.8 °C | 25.1 °C | 111.51 mm |
| July | 15.9 °C | 27.6 °C | 87.12 mm |
| August | 14.5 °C | 26.2 °C | 81.79 mm |
| September | 9.7 °C | 22.4 °C | 78.74 mm |
| October | 2.2 °C | 14.5 °C | 54.86 mm |
| November | -5.2 °C | 5.2 °C | 26.92 mm |
| December | -11.6 °C | -2.5 °C | 22.35 mm |
| Annual | 1.1 °C | 12.2 °C | 694.68 mm |
| 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 : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |