Revillo, South Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.8 °C (low) to 12.5 °C (high). Annual precipitation averages 652 Millimeters. Revillo is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.7 °C | -5.2 °C | 17.78 mm |
| February | -13.8 °C | -2.8 °C | 18.29 mm |
| March | -6.8 °C | 3.9 °C | 32.51 mm |
| April | 0.3 °C | 12.6 °C | 64.01 mm |
| May | 7.7 °C | 20 °C | 77.47 mm |
| June | 13.8 °C | 25.6 °C | 100.84 mm |
| July | 15.9 °C | 28 °C | 92.96 mm |
| August | 14.3 °C | 26.9 °C | 77.98 mm |
| September | 9.3 °C | 22.8 °C | 65.02 mm |
| October | 2 °C | 14.6 °C | 57.15 mm |
| November | -5.1 °C | 5.7 °C | 27.18 mm |
| December | -11.9 °C | -2.2 °C | 20.83 mm |
| Annual | 0.8 °C | 12.5 °C | 652.02 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |