| Stations: 17 | Humidity |
| Annapolis, United States Naval Academy (2 m) | 45 % |
| Baltimore (6 m) | 35 % |
| Baltimore Airport (47 m) | 55 % |
| Cambridge (6 m) | 45 % |
| College Park Airport (15 m) | 40 % |
| Easton Airport (22 m) | 55 % |
| Frederick Airport (92 m) | 55 % |
| Greater Cumberland Regional Airport (236 m) | 45 % |
| Hagerstown Regional Airport (215 m) | 50 % |
| Joint Base Andrews (88 m) | 40 % |
| Martin State Airport (7 m) | 55 % |
| Montgomery (164 m) | 55 % |
| Ocean (4 m) | 65 % |
| Patuxent River (14 m) | 45 % |
| Salisbury (16 m) | 45 % |
| St. Inigoes Shores (6 m) | 45 % |
| Tipton Airport (46 m) | 65 % |