| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 65n - Chesapeake Rolling Coastal Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 21226 - Curtis Bay, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 35 | 44 | 54 | 63 | 68 | 66 | 59 | 47 | 38 | 30 | 46 |
| Avg Max Temp (°F) | 43 | 46 | 55 | 66 | 76 | 84 | 89 | 87 | 80 | 68 | 57 | 47 | 67 |
| Avg Precip (In.) | 3.52 | 3.04 | 4.03 | 3.16 | 4.16 | 3.57 | 3.97 | 3.94 | 4.09 | 3.29 | 3.38 | 3.52 | 43.67 |