Is San Diego cold in winter? This is my first trip to California It's warm during the day. but it's chilly at night. bring couple of hoodies. San Diego California 남쪽에 있는 지명 Is San Diego cold in winter? hot 더운 warm 따뜻한 cool 시원한 cold 추운 chilly 쌀쌀한 in 긴 시기(계절, 년, 월) at 짧은 시기(시간) in summer, in spring New Jersey is hot in summer. Mayu was born in fall. autum Is San Diego cold in winter? This is my fi..