« Décalé » is an interesting word. It's what the seasons are in 2013. Winter was mild. Spring was wintry. Summer was late, and it continues into fall — it's almost 70ºF — 20ºC — outside this morning. Everything is "off" — summer weather when it's almost October doesn't seem right.
The French-English dictionary gives "quirky, off-beat" as one translation for décalé. "Out of sync." It also gives "unconventional, irregular." All that applies, in this case. You can be « décalé par rapport à la réalité » — "out of touch with reality." The seasons have lost touch with the calendar.