| 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: | 72a - Wabash-Ohio Bottomlands |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 42303 - Owensboro, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 28 | 37 | 45 | 55 | 64 | 68 | 65 | 58 | 46 | 37 | 29 | 46 |
| Avg Max Temp (°F) | 42 | 48 | 59 | 70 | 79 | 87 | 90 | 89 | 83 | 72 | 58 | 46 | 69 |
| Avg Precip (In.) | 3.5 | 3.51 | 4.06 | 4.57 | 4.74 | 4 | 3.76 | 3.39 | 3.37 | 2.78 | 4.27 | 3.78 | 45.73 |