Washington, DC Travel Guide - Climate

Summers are very hot and humid, with highs in July of 21 to 32°C (75 to 90°F). Although generally mild, winter temperatures can be quite low, ranging from -4 to 4°C (24 to 40°F) in January, with seasonal snowfalls averaging 43cm (17 inches). Rainfall is moderate throughout the year.

Heavy clothing and extra bundling for the winter months. Cottons and linens advised for the summer months. Rain gear might be advisable.