| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 65e - Northern Hilly Gulf Coastal Plain |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 38363 - Parsons, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 29 | 37 | 45 | 55 | 63 | 68 | 66 | 59 | 46 | 37 | 30 | 47 |
| Avg Max Temp (°F) | 47 | 53 | 62 | 72 | 79 | 87 | 90 | 89 | 84 | 73 | 61 | 51 | 71 |
| Avg Precip (In.) | 4.49 | 4.35 | 5.65 | 4.73 | 5.74 | 4.5 | 4.65 | 3.12 | 3.94 | 3.42 | 5.02 | 5.43 | 55.03 |