| 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: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 64e - Glaciated Triassic Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 07605 - Leonia, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 32 | 41 | 51 | 60 | 66 | 64 | 57 | 45 | 37 | 28 | 44 |
| Avg Max Temp (°F) | 38 | 41 | 50 | 61 | 72 | 80 | 85 | 83 | 76 | 64 | 54 | 43 | 62 |
| Avg Precip (In.) | 3.81 | 2.95 | 4.11 | 4.09 | 4.57 | 3.91 | 4.41 | 4.21 | 4.55 | 3.81 | 4.2 | 3.74 | 48.36 |