| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F 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: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 63a - Delaware River Terraces and Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 08332 - Millville, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 25 | 33 | 41 | 51 | 60 | 66 | 65 | 57 | 45 | 37 | 28 | 44 |
| Avg Max Temp (°F) | 41 | 44 | 53 | 63 | 73 | 82 | 86 | 85 | 78 | 67 | 56 | 46 | 65 |
| Avg Precip (In.) | 3.7 | 3.14 | 4.33 | 3.64 | 3.93 | 3.34 | 3.75 | 4.26 | 3.64 | 3.25 | 3.35 | 3.6 | 43.93 |