Staffel of JG 54 until his return on 15 September 1943. On 2 August 1943, he was awarded the German Cross in Gold (). On 28 September, Weiß was appointed Staffelkapitän of 10.
Weiß held a leadership position with JG 54 until his return on 15 September 1943. He was honored with the German Cross in Gold () on August 2, 1943, and subsequently became the commander of Squadron 10 on September 28.