| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 84c - Barrier Islands - Coastal Marshes | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 08225 - Northfield, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 34 | 42 | 52 | 61 | 67 | 66 | 59 | 48 | 39 | 30 | 46 |
| Avg Max Temp (°F) | 42 | 44 | 51 | 60 | 70 | 78 | 84 | 82 | 76 | 66 | 56 | 47 | 63 |
| Avg Precip (In.) | 3.77 | 2.97 | 4.16 | 3.6 | 3.5 | 2.8 | 3.87 | 4.44 | 3.32 | 3.06 | 3.38 | 3.32 | 42.19 |