Waverly, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.2 °F (low) to 53 °F (high). Annual precipitation averages 24.8 Inches. Waverly is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.4 °F | 20.9 °F | 0.69 in. |
| February | 6.0 °F | 25.8 °F | 0.7 in. |
| March | 18.1 °F | 37.9 °F | 1.2 in. |
| April | 30.9 °F | 53.5 °F | 2.4 in. |
| May | 44.0 °F | 66.2 °F | 3.02 in. |
| June | 54.9 °F | 75.8 °F | 3.81 in. |
| July | 59.7 °F | 81.5 °F | 3.52 in. |
| August | 57.2 °F | 79.7 °F | 2.9 in. |
| September | 48.6 °F | 71.6 °F | 2.65 in. |
| October | 34.8 °F | 56.6 °F | 2.28 in. |
| November | 21.1 °F | 39.8 °F | 0.9 in. |
| December | 9.2 °F | 26.2 °F | 0.75 in. |
| Annual | 32.2 °F | 53 °F | 24.82 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Dfb - Humid Continental Mild Summer, Wet All Year |