| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°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. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 84d - Inner Coastal Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 08861 - Perth Amboy, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 23 | 31 | 40 | 50 | 59 | 65 | 63 | 56 | 44 | 36 | 27 | 43 |
| Avg Max Temp (°F) | 39 | 42 | 51 | 61 | 72 | 80 | 85 | 84 | 76 | 65 | 54 | 44 | 63 |
| Avg Precip (In.) | 3.96 | 2.99 | 4.13 | 4.05 | 4.51 | 3.75 | 4.88 | 4.34 | 4.47 | 3.6 | 4.02 | 3.79 | 48.51 |