| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| 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 38011 - Brighton, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 31 | 40 | 49 | 58 | 66 | 70 | 67 | 60 | 49 | 40 | 31 | 49 |
| Avg Max Temp (°F) | 46 | 52 | 61 | 71 | 80 | 88 | 91 | 90 | 84 | 74 | 60 | 50 | 70 |
| Avg Precip (In.) | 4.09 | 4.16 | 5.33 | 5.32 | 5.26 | 4.2 | 4.1 | 2.78 | 3.67 | 3.31 | 5.24 | 5.56 | 53.02 |