In some places, it is even the coldest September morning since weather records began. In Zwiesel in the Bavarian Forest, the old record was minus 1.7 degrees, in the previous night, there were minus 2.6 degrees. Also in Nuremberg, it is partly as cold as at least since 1975 not at this time of year.
Here is an overview of the records:
Tirschenreuth: old minus 2.3 degrees - new minus 2.6 degrees
Nuremberg-Netzstall: old minus 2.1 degrees - new minus 2.7 degrees
Bamberg: old minus 2.1 degrees - new minus 2.3 degrees
Dippoldiswalde: old minus 2.1 degrees - new minus 2.2 degrees
Schorndorf: old minus 2.1 degrees - new minus 2.2 degrees
Waldmünchen: old minus 2.0 degrees - new minus 2.2 degrees
Zwiesel: old minus 1.7 degrees - new minus 2.8 degrees
https://www.wetteronline.de/wetterticker/kaelteste-septembernacht-seit-messbeginn-201809268091019