Unseasonably warm, cold, or mild weather is warmer, colder, or milder than it usually is at the time of year.
...a spell of ~ warm weather...
It was ~ mild for late January.
ADV: ADV adj
Unseasonably warm, cold, or mild weather is warmer, colder, or milder than it usually is at the time of year.
...a spell of ~ warm weather...
It was ~ mild for late January.
ADV: ADV adj
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012