| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| Average Last Frost Date: | Mar. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 65f - Southern Pine Plains and Hills |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 70450 - Mount Hermon, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 40 | 47 | 53 | 61 | 67 | 70 | 70 | 65 | 54 | 45 | 40 | 54 |
| Avg Max Temp (°F) | 60 | 64 | 71 | 78 | 84 | 90 | 92 | 92 | 88 | 80 | 70 | 62 | 78 |
| Avg Precip (In.) | 6.7 | 5.53 | 6.51 | 6.07 | 5.63 | 5.16 | 5.85 | 5.17 | 4.46 | 3.58 | 5.2 | 5.54 | 65.39 |