Slaughterville, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.6 °C (low) to 22.8 °C (high). Annual precipitation averages 993.9 Millimeters. Slaughterville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.7 °C | 10.4 °C | 38.61 mm |
| February | -0.6 °C | 13 °C | 45.97 mm |
| March | 4.2 °C | 17.9 °C | 74.68 mm |
| April | 8.8 °C | 22.7 °C | 99.82 mm |
| May | 14.6 °C | 26.7 °C | 140.72 mm |
| June | 19.5 °C | 31.3 °C | 117.35 mm |
| July | 21.6 °C | 34.4 °C | 90.68 mm |
| August | 20.8 °C | 34.3 °C | 80.01 mm |
| September | 16.5 °C | 29.9 °C | 100.08 mm |
| October | 9.9 °C | 23.9 °C | 88.9 mm |
| November | 3.7 °C | 17.1 °C | 58.42 mm |
| December | -1.2 °C | 11.4 °C | 58.67 mm |
| Annual | 9.6 °C | 22.8 °C | 993.91 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |