September 5: - General George Washington reaches Chester, Pennsylvania.
- British Admiral Samuel Graves arrives at Chesapeake Bay and engages the French fleet.
September 6: - General George Washington reaches Head of Elk, Maryland.
- The two fleets maintain contact off the Virginia coast, but do not engage.
September 7 - The two fleets maintain contact off the Virginia coast, but do not engage.
September 8 - The French fleet breaks off and returns to the Chesapeake.
September 15 - General George Washington learns that Admiral de Grasse has returned and Admiral de Barras has arrived from Newport, Rhode Island.
September 28:
- General George Washington arrives at Yorktown, Virginia.
- General George Weedon is reinforced by Lauzen's Legion in allied operations at Gloucester.
