| 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 | |
| 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: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 84b - Pine Barrens | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 08009 - Berlin, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 25 | 32 | 40 | 50 | 60 | 65 | 63 | 56 | 44 | 36 | 28 | 43 |
| Avg Max Temp (°F) | 41 | 44 | 53 | 64 | 74 | 83 | 87 | 86 | 79 | 68 | 57 | 46 | 65 |
| Avg Precip (In.) | 3.9 | 2.92 | 4.18 | 3.85 | 4.18 | 3.76 | 4.39 | 4.68 | 3.94 | 3.36 | 3.54 | 3.74 | 46.43 |