It gets cold morning and evening, so I want to be careful about clothing and such.

Literal

Morning-evening [topic-は] gets-cold [because-ので], clothing [etc.-など] [to-に] want-to-be-careful.

朝夕 (morning and evening) is a compact Sino-Japanese compound used as a temporal topic. 冷える describes temperature dropping. ~たい here is self-directed: 'I want to be mindful.' A practical, seasonal note typical of weather advisories or blogs.