The municipality lies in the Vulkaneifel, a part of the Eifel known for its volcanic history, geographical and geological features, and even ongoing activity today, including gases that sometimes well up from the earth.

[5] In the time of French administration, the Mairie (“Mayoralty”) of Weidenbach belonged to the Canton of Manderscheid in the Region of Prüm.

[1] The German blazon reads: Unter rotem Schildhaupt, darin ein goldener Zickzackbalken, in Silber ein erniedrigter blauer Wellenbalken, überdeckt von einem Weidenbaum mit schwarzem Stamm und grünen Blättern.

Recalling the time of the Lordship of Pyrmont and the allegiance to the Electorate of Trier through the Amt of Manderscheid is the fess dancetty in the chief, but with the tinctures reversed.

The main field in the arms is canting for the municipality's name, Weidenbach, which in German literally means “Willowbrook”, thus explaining the charges there, a willow and a fess abased azure (blue horizontal wavy stripe set below the centre) representing a brook.