| 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. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 64b - Trap Rock and Conglomerate Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 07021 - Essex Fells, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 39 | 48 | 58 | 63 | 61 | 53 | 41 | 34 | 25 | 41 |
| Avg Max Temp (°F) | 37 | 40 | 50 | 61 | 71 | 80 | 85 | 83 | 76 | 65 | 53 | 42 | 62 |
| Avg Precip (In.) | 4.09 | 3.03 | 4.21 | 4.46 | 4.86 | 4.33 | 4.72 | 4.39 | 5.06 | 4 | 4.25 | 3.99 | 51.39 |