Oil Trough, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 21.5 °C (high). Annual precipitation averages 1289.3 Millimeters. Oil Trough is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.4 °C | 8.4 °C | 94.49 mm |
| February | 0.3 °C | 11.1 °C | 99.82 mm |
| March | 4.7 °C | 16.2 °C | 121.67 mm |
| April | 9.7 °C | 21.8 °C | 135.89 mm |
| May | 15.3 °C | 26.6 °C | 135.38 mm |
| June | 20.1 °C | 31.1 °C | 90.68 mm |
| July | 21.9 °C | 32.7 °C | 95.76 mm |
| August | 20.7 °C | 32.3 °C | 86.11 mm |
| September | 16.4 °C | 28.8 °C | 85.09 mm |
| October | 9.8 °C | 23.1 °C | 100.58 mm |
| November | 4.3 °C | 15.7 °C | 120.14 mm |
| December | 0.2 °C | 9.9 °C | 123.7 mm |
| Annual | 10.2 °C | 21.5 °C | 1289.31 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |