Three months of discontent, maybe? (6)
I believe the answer is:
winter
'three months' is the definition.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for winter that I've seen before include "Time for mittens and scarves?" , "'Now is the . . . . . . of our discontent' (Richard III)" , "Coldest season" , "period of freeze?" , "period of discontent?" .)