| 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 7b: 5F to 10F |
| 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: | 74b - Loess Plains |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 38637 - Horn Lake, MS | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 34 | 42 | 51 | 60 | 68 | 72 | 70 | 63 | 51 | 42 | 34 | 51 |
| Avg Max Temp (°F) | 48 | 54 | 63 | 72 | 80 | 88 | 91 | 90 | 84 | 75 | 62 | 52 | 72 |
| Avg Precip (In.) | 4.33 | 4.2 | 5.51 | 5.68 | 5.28 | 4.48 | 3.89 | 2.93 | 3.18 | 3.31 | 5.38 | 5.59 | 53.75 |