On 2 February 1927 Wiehle obtained his doctorate in Halle (Saale) with the thesis "Beiträge zur Kenntnis des Radnetzbaues der Epeiriden, Tetragnathiden und Uloboriden".
From 1946 on, Wiehle was allowed to work again as a mathematics teacher at the vocational school of the rolling stock factory SAG Waggonbau Dessau.
Wiehle died on 7 July 1966 in Dessau of the consequences of a heart attack that he suffered at a conference of arachnologists in June 1966 in Frankfurt.
Together with Maria Harm, teacher at Mädchenmittelschule II in Dessau, Wiehle wrote the textbook Lebenskunde für Mittelschulen, which was released in three parts.
With Wilhelm Meil, principal of a middleschool in Dessau, he authored Einführung in die Rassenkunde unseres Volkes: Rasse verpflichtet!, published in 1935 in 12th edition.