Notice problem about temperature (6)
I believe the answer is:
poster
'notice' is the definition.
(I know that notice can be written as poster)
'problem about temperature' is the wordplay.
I cannot really understand how this works, but
'temperature' could be 't' (abbreviation) and 't' is located in the answer.
'problem' could be 'poser' (poser is a kind of problem) and 'poser' is located in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for poster that I've seen before include "surfer who leaves messages on boards?" , "Large printed bill" , "Paper advertisement for topers" , "Bill or placard" , "'Notice, placard (6)'" .)