Pine Bluff, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.4 °C (low) to 22.7 °C (high). Annual precipitation averages 1352.3 Millimeters. Pine Bluff is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.4 °C | 10.7 °C | 105.41 mm |
| February | 2.2 °C | 13.3 °C | 113.28 mm |
| March | 6.2 °C | 18 °C | 132.33 mm |
| April | 10.8 °C | 23.1 °C | 146.81 mm |
| May | 16.3 °C | 27.3 °C | 124.21 mm |
| June | 20.7 °C | 31.4 °C | 88.65 mm |
| July | 22.3 °C | 33 °C | 89.66 mm |
| August | 21.6 °C | 32.7 °C | 87.12 mm |
| September | 17.6 °C | 29.8 °C | 91.19 mm |
| October | 11 °C | 24.1 °C | 114.81 mm |
| November | 5.4 °C | 17.2 °C | 111.51 mm |
| December | 1.9 °C | 12.2 °C | 147.32 mm |
| Annual | 11.4 °C | 22.7 °C | 1352.3 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |