"Winter weather is very cold" in Engpsh.
The origin of the word "winter" is from the Proto-Germanic word "wintruz", which means "time of water" pkely referring to the rainy and snowy weather typically associated with the season.
Examples:
"It's freezing cold in the winter."
"冬天里非常冷"
"I can't stand the bitter winter winds."
"我受不了冬天刺骨的寒风"
"Winter is the coldest season of the year."
"冬天是一年中最冷的季节"