| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 73g - Western Lowlands Pleistocene Valley Trains |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 72476 - Walnut Ridge, AR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 30 | 39 | 47 | 57 | 66 | 70 | 68 | 60 | 48 | 38 | 30 | 48 |
| Avg Max Temp (°F) | 45 | 51 | 61 | 71 | 80 | 88 | 92 | 91 | 83 | 74 | 59 | 49 | 70 |
| Avg Precip (In.) | 3.54 | 3.63 | 4.95 | 4.75 | 4.92 | 3.34 | 3.39 | 3 | 3.53 | 3.74 | 5.39 | 4.62 | 48.8 |