Chidester, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.6 °C (low) to 23.7 °C (high). Annual precipitation averages 1374.9 Millimeters. Chidester 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 | -0.2 °C | 12.2 °C | 105.16 mm |
| February | 1.4 °C | 14.5 °C | 114.3 mm |
| March | 5.5 °C | 19.3 °C | 135.64 mm |
| April | 9.9 °C | 23.9 °C | 140.21 mm |
| May | 15.4 °C | 27.8 °C | 141.48 mm |
| June | 19.8 °C | 31.9 °C | 104.9 mm |
| July | 21.7 °C | 33.8 °C | 93.47 mm |
| August | 20.9 °C | 33.8 °C | 84.07 mm |
| September | 17 °C | 30.7 °C | 91.69 mm |
| October | 10.2 °C | 24.8 °C | 120.14 mm |
| November | 4.7 °C | 18.2 °C | 106.43 mm |
| December | 1.2 °C | 13.3 °C | 137.41 mm |
| Annual | 10.6 °C | 23.7 °C | 1374.9 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |