| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 35c - Pleistocene Fluvial Terraces |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 71603 - Pine Bluff, AR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 35 | 43 | 51 | 60 | 68 | 72 | 70 | 63 | 52 | 42 | 34 | 52 |
| Avg Max Temp (°F) | 50 | 56 | 65 | 74 | 81 | 89 | 93 | 91 | 85 | 76 | 63 | 53 | 73 |
| Avg Precip (In.) | 4.23 | 4.03 | 5.05 | 5.15 | 5.01 | 3.8 | 3.92 | 3.26 | 3.27 | 4.47 | 4.91 | 5.39 | 52.49 |