Hector, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 21.8 °C (high). Annual precipitation averages 1319.5 Millimeters. Hector is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.4 °C | 8.8 °C | 95.76 mm |
| February | -0.4 °C | 12.1 °C | 89.92 mm |
| March | 3.6 °C | 17 °C | 118.62 mm |
| April | 8 °C | 22 °C | 134.87 mm |
| May | 13.2 °C | 26.3 °C | 134.62 mm |
| June | 17.9 °C | 30.4 °C | 102.36 mm |
| July | 19.9 °C | 33.1 °C | 97.28 mm |
| August | 20 °C | 33.1 °C | 95.76 mm |
| September | 15.8 °C | 29.2 °C | 108.97 mm |
| October | 9.3 °C | 23.3 °C | 107.95 mm |
| November | 3.1 °C | 15.8 °C | 116.59 mm |
| December | -0.9 °C | 10.4 °C | 116.84 mm |
| Annual | 8.9 °C | 21.8 °C | 1319.54 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 |