| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 64c - Piedmont Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 21716 - Brunswick, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 25 | 32 | 41 | 51 | 60 | 64 | 63 | 55 | 43 | 35 | 27 | 43 |
| Avg Max Temp (°F) | 41 | 46 | 55 | 67 | 76 | 84 | 88 | 86 | 80 | 69 | 57 | 46 | 66 |
| Avg Precip (In.) | 2.94 | 2.57 | 3.54 | 3.3 | 3.91 | 3.7 | 3.68 | 3.5 | 3.66 | 3.09 | 3.17 | 2.95 | 40 |