Weather history and climate summary information is available for the following locations:
- Baltimore
- Camp Springs
- Patuxent River
Warmest January Days
The warmest January days in Maryland are:
| Patuxent River, Maryland | 2002 | 80.8°F |
| Patuxent River, Maryland | 1950 | 78.4°F |
| Camp Springs, Maryland | 1950 | 77.4°F |
| Baltimore, Maryland | 1975 | 75°F |
| Baltimore, Maryland | 1950 | 75°F |
Coldest January Days
The coldest January days in Maryland were:
| Camp Springs, Maryland | 1994 | -7.1°F |
| Baltimore, Maryland | 1982 | -7.1°F |
| Baltimore, Maryland | 1963 | -6.7°F |
| Baltimore, Maryland | 1985 | -6.2°F |
| Baltimore, Maryland | 1984 | -6°F |
Wettest January Days
The wettest single days in January occurred:
| Baltimore, Maryland | 1976 | 3.1 inches |
| Patuxent River, Maryland | 2000 | 3 inches |
| Baltimore, Maryland | 1996 | 2.8 inches |
| Patuxent River, Maryland | 1991 | 2.6 inches |
| Camp Springs, Maryland | 1998 | 2.6 inches |