| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 64c - Piedmont Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 21204 - Towson, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 26 | 33 | 43 | 53 | 62 | 67 | 65 | 59 | 46 | 37 | 29 | 45 |
| Avg Max Temp (°F) | 41 | 45 | 54 | 65 | 75 | 83 | 87 | 85 | 79 | 68 | 56 | 46 | 65 |
| Avg Precip (In.) | 3.79 | 3.26 | 4.45 | 3.67 | 5.23 | 4.01 | 4.31 | 4.36 | 4.62 | 3.84 | 3.86 | 3.78 | 49.17 |