| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F 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: | 71g - Eastern Highland Rim |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 42629 - Jamestown, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 35 | 43 | 52 | 61 | 65 | 64 | 57 | 45 | 36 | 29 | 45 |
| Avg Max Temp (°F) | 44 | 49 | 58 | 68 | 76 | 84 | 87 | 86 | 81 | 70 | 58 | 48 | 67 |
| Avg Precip (In.) | 4.33 | 4.02 | 4.94 | 4.15 | 5.26 | 4.66 | 4.56 | 4.01 | 3.99 | 3.18 | 4.27 | 4.92 | 52.28 |