Waubay, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.2 °F (low) to 52.9 °F (high). Annual precipitation averages 24.1 Inches. Waubay 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 | 2.7 °F | 20.7 °F | 0.67 in. |
| February | 6.2 °F | 25.6 °F | 0.64 in. |
| March | 18.2 °F | 37.7 °F | 1.01 in. |
| April | 31.7 °F | 53.1 °F | 2.25 in. |
| May | 45.1 °F | 66.5 °F | 2.95 in. |
| June | 56.2 °F | 76.1 °F | 3.84 in. |
| July | 60.8 °F | 81.0 °F | 3.93 in. |
| August | 58.9 °F | 79.8 °F | 2.58 in. |
| September | 50.2 °F | 71.9 °F | 2.43 in. |
| October | 36.3 °F | 56.7 °F | 2.27 in. |
| November | 22.4 °F | 39.7 °F | 0.75 in. |
| December | 9.8 °F | 26.0 °F | 0.76 in. |
| Annual | 33.2 °F | 52.9 °F | 24.08 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 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |