Alexandria conducted shakedown and anti-submarine warfare (ASW) training out of Guantánamo Bay, Cuba, in late March and early April.

Thus, when she reported for duty with the Commander, Destroyers, Atlantic Fleet, on 15 May, the patrol frigate received an alternative assignment as a weather ship.

After receiving modifications at the Charleston Navy Yard, she began weather patrol duty off the Newfoundland coast late in June 1945.

That duty, broken only by a visit to Alexandria, Virginia, in late October and early November, lasted until February 1946 when the ship was declared surplus to the needs of the Navy.

On 18 April 1947, the former patrol frigate was sold to the Sun Shipbuilding & Drydock Company of Chester, Pennsylvania, for scrapping.