This is the 2780th most frequent German word.
niedrigsten
"Lowest."
The word 'niedrigsten' in this sentence is used as the superlative form of 'niedrig', functioning as an adjective modifying 'Temperaturen', indicating the 'lowest' in terms of magnitude.
Die niedrigsten Temperaturen werden im Winter gemessen.
The lowest temperatures are recorded in winter.
Here, 'niedrigsten' refers to the monetary value being at its minimum or most affordable level, also functioning as a superlative adjective modifying 'Preise'.
Er setzt immer die niedrigsten Preise für seine Produkte.
He always sets the lowest prices for his products.
In this sentence, 'niedrigsten' describes 'Gebäude', indicating the buildings with the least height or elevation.