| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F 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. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71d - Outer Bluegrass |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 40475 - Richmond, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 26 | 35 | 43 | 52 | 61 | 64 | 63 | 57 | 45 | 36 | 28 | 44 |
| Avg Max Temp (°F) | 41 | 46 | 56 | 67 | 75 | 82 | 86 | 85 | 80 | 69 | 56 | 46 | 66 |
| Avg Precip (In.) | 3.56 | 3.65 | 4.38 | 3.61 | 4.72 | 4.51 | 4.64 | 3.74 | 3.12 | 3.02 | 3.65 | 4.17 | 46.78 |