| 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. 11 - Oct. 20 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 64a - Triassic Lowlands |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 08558 - Skillman, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 21 | 30 | 38 | 48 | 58 | 63 | 61 | 54 | 42 | 34 | 26 | 41 |
| Avg Max Temp (°F) | 38 | 41 | 51 | 62 | 72 | 81 | 86 | 84 | 76 | 65 | 54 | 43 | 63 |
| Avg Precip (In.) | 3.8 | 2.72 | 3.83 | 3.92 | 4.67 | 3.88 | 5 | 4.27 | 4.52 | 3.55 | 3.82 | 3.74 | 47.73 |