Outline of warm weather reports (7)
I believe the answer is:
summery
'warm weather reports' is the definition.
'summery' can be an answer for 'warm' (thesaurus). I am not sure about the 'weather reports' bit.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for summery that I've seen before include "Like August, say" , "Of June, July or August (most years)" , "Like a spell of good weather" , "concerning part of the year" , "of the season" .)