Weather history and climate summary information is available for the following locations:
- Washington
Warmest January Days
The warmest January days in District of Columbia are:
| Washington, District of Columbia | 1950 | 78.3°F |
| Washington, District of Columbia | 2002 | 77°F |
| Washington, District of Columbia | 1975 | 75.9°F |
| Washington, District of Columbia | 1937 | 75.4°F |
| Washington, District of Columbia | 1974 | 75.2°F |
Coldest January Days
The coldest January days in District of Columbia were:
| Washington, District of Columbia | 1982 | -5.1°F |
| Washington, District of Columbia | 1994 | -4°F |
| Washington, District of Columbia | 1985 | -4°F |
| Washington, District of Columbia | 1940 | 1.4°F |
| Washington, District of Columbia | 1977 | 1.9°F |
Wettest January Days
The wettest single days in January occurred:
| Washington, District of Columbia | 1973 | 4.3 inches |
| Washington, District of Columbia | 1976 | 2.1 inches |
| Washington, District of Columbia | 1998 | 1.7 inches |
| Washington, District of Columbia | 2005 | 1.7 inches |
| Washington, District of Columbia | 1977 | 1.7 inches |