Wolsey, 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 56.6 °F (high). Annual precipitation averages 23.7 Inches. Wolsey 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 | 5.1 °F | 24.6 °F | 0.7 in. |
| February | 9.2 °F | 30.0 °F | 0.75 in. |
| March | 20.8 °F | 42.5 °F | 0.98 in. |
| April | 32.6 °F | 57.1 °F | 2.67 in. |
| May | 45.4 °F | 69.2 °F | 3.32 in. |
| June | 56.4 °F | 79.3 °F | 3.8 in. |
| July | 61.1 °F | 85.1 °F | 2.87 in. |
| August | 58.6 °F | 83.2 °F | 2.72 in. |
| September | 49.2 °F | 75.3 °F | 2.29 in. |
| October | 35.3 °F | 60.2 °F | 1.99 in. |
| November | 21.8 °F | 43.5 °F | 0.83 in. |
| December | 10.6 °F | 29.6 °F | 0.74 in. |
| Annual | 33.8 °F | 56.6 °F | 23.66 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 |