The town of Rupperath was first mentioned in a document in 1054. In 1173 the place was known as Roperath, in the Liber valoris it was listed under the name Rubolderoide. In the Middle Ages, Rupperath represented a clearing island that belonged to the Johanniter coming of Adenau. The coming ones owned fifteen farms in and around Rupperath. Between 1816 and 1969, Rupperath formed its own municipality together with Hünkhoven. On July 1, 1969, Rupperath was incorporated into Bad Münstereifel.
The Church of St. Peter is mentioned as early as 1173. It was one of the sending churches of the Ahrgau deanery and is also mentioned in the Liber valoris. From 1290, the right of patronage lay with the Order of St. John. The predecessor of today's church was built in 1787 on today's cemetery grounds, was considered a "simple hall building" and had an east tower. It was removed in 1908/09. Today's parish church with a four-story west tower was built in 1904-1905 in the neo-Romanesque style on the site of the former vicarage.
After the flood disaster on July 14, 2021, villagers spontaneously organized an overnight camp and a refreshment center in the old school in Rupperath for those affected from the neighboring villages of the Ahr Valley. On August 2, 2021, a group of helpers from the roof tent nomads, a Germany-wide community of campers around Thilo Vogel and Dennis Brandt, set up a base camp in the old school to help people in the flood areas on the Ahr (Rhineland-Palatinate), Erft, Inde, Rur and Olef (North Rhine-Westphalia) and their tributaries. A meadow on the outskirts served as a sleeping camp until the end of December. Between January and April 2022, the roof tent nomads set up an autonomous camp not far from Rupperath at the edge of the forest on a former sports field and were thus able to merge their old school and sleeping camp locations. Rupperath gained nationwide fame through the media coverage of this helper group.