| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| 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 72396 - Wynne, AR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 32 | 41 | 49 | 59 | 67 | 71 | 68 | 61 | 49 | 40 | 32 | 50 |
| Avg Max Temp (°F) | 46 | 52 | 61 | 70 | 79 | 87 | 91 | 90 | 83 | 74 | 60 | 50 | 70 |
| Avg Precip (In.) | 3.58 | 3.55 | 4.85 | 5.63 | 4.97 | 3.75 | 2.99 | 2.49 | 3.49 | 3.66 | 5.08 | 4.95 | 48.99 |