| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 63b - Chesapeake-Pamlico Lowlands and Tidal Marshes |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 21817 - Crisfield, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 31 | 38 | 47 | 56 | 65 | 71 | 70 | 63 | 52 | 42 | 34 | 50 |
| Avg Max Temp (°F) | 45 | 47 | 55 | 65 | 74 | 82 | 87 | 85 | 79 | 69 | 59 | 49 | 66 |
| Avg Precip (In.) | 3.32 | 3.03 | 4.33 | 2.85 | 3.18 | 2.88 | 4.12 | 4.14 | 2.88 | 2.83 | 2.85 | 2.6 | 39.01 |