Abstemious (5)
'abstemious' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sober that I've seen before include "Serious; muted in colour" , "Serious, thoughtful" , "Serious - sombre" , "Snot drunk" , "Unintoxicated" .)
'abstemious' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for temperate that I've seen before include "Abstemious" , "With mild climate" , "Moderate, mild" , "comfortably warm?" , "Showing moderation" .)