| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| 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 38224 - Cottage Grove, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 29 | 37 | 46 | 55 | 64 | 68 | 65 | 58 | 46 | 38 | 29 | 47 |
| Avg Max Temp (°F) | 44 | 50 | 60 | 70 | 78 | 86 | 89 | 88 | 82 | 71 | 59 | 48 | 69 |
| Avg Precip (In.) | 4.17 | 4.38 | 5.11 | 4.85 | 5.13 | 4.62 | 4.57 | 3.5 | 3.75 | 3.44 | 4.98 | 5.19 | 53.7 |