| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| 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 47630 - Newburgh, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 27 | 36 | 45 | 54 | 63 | 68 | 65 | 58 | 46 | 37 | 28 | 46 |
| Avg Max Temp (°F) | 40 | 46 | 57 | 68 | 78 | 86 | 89 | 88 | 82 | 71 | 57 | 45 | 67 |
| Avg Precip (In.) | 3.3 | 3.16 | 4.35 | 4.43 | 4.82 | 3.99 | 4.06 | 3.47 | 3.35 | 2.91 | 4.19 | 3.66 | 45.7 |