Pack scatter when temperature drops (4)
I believe the answer is:
stow
'pack' is the definition.
(I know that stow is a more specific form of the action pack)
'scatter when temperature drops' is the wordplay.
I cannot really see how this works, but
'temperature' could be 't' (abbreviation) and 't' is present in the answer.
'scatter' could be 'sow' (I've seen this before) and 'sow' is present in the leftover letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for stow that I've seen before include "Lay up, pack away" , "Keep under hatches" , "Put tidily away" , "Pack (in proper place)" , "Pack, put away" .)