| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| 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: | 65p - Southeastern Floodplains and Low Terraces |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 39465 - Petal, MS | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 39 | 46 | 53 | 61 | 68 | 71 | 71 | 65 | 53 | 44 | 38 | 54 |
| Avg Max Temp (°F) | 59 | 64 | 71 | 77 | 84 | 90 | 92 | 92 | 88 | 79 | 70 | 62 | 77 |
| Avg Precip (In.) | 6.81 | 5.17 | 6.46 | 5.36 | 5.45 | 4.37 | 5.53 | 4.67 | 4 | 3.44 | 5.22 | 5.42 | 61.9 |