| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| 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 08242 - Rio Grande, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 27 | 34 | 42 | 52 | 61 | 67 | 65 | 59 | 48 | 39 | 31 | 46 |
| Avg Max Temp (°F) | 42 | 44 | 52 | 61 | 71 | 79 | 85 | 83 | 78 | 67 | 57 | 47 | 64 |
| Avg Precip (In.) | 3.8 | 3.06 | 4.24 | 3.44 | 3.68 | 3.05 | 3.55 | 4.15 | 3.45 | 3.39 | 3.21 | 3.51 | 42.52 |