A feature of singular weather (7)
I believe the answer is:
element
'a feature' is the definition.
(I've seen this in another clue)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for element that I've seen before include "that's used in heating" , "An abstract part of something" , "Wire in electric fire" , "Singular ingredient" , "lead, for example" .)