| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| Average Last Frost Date: | Feb. 21 - Feb. 29 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 75a - Gulf Coast Flatwoods |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 39525 - Diamondhead, MS | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 43 | 50 | 58 | 65 | 71 | 73 | 73 | 69 | 58 | 49 | 43 | 58 |
| Avg Max Temp (°F) | 59 | 63 | 69 | 76 | 83 | 88 | 90 | 90 | 87 | 79 | 69 | 62 | 76 |
| Avg Precip (In.) | 6.4 | 5.44 | 6.42 | 4.96 | 5.55 | 5.42 | 6.63 | 6.1 | 5.95 | 3.16 | 4.94 | 5.07 | 66.04 |