'warm-weather' is a compound word formed from 'warm' and 'weather'. 'Warm' originates from Old English 'wearm', meaning 'having a moderate degree of heat'. 'Weather' comes from Old English 'weder', meaning 'air, sky, breeze'.

'Warm' and 'weather' have been used in English since the Old English period, and their combination into 'warm-weather' reflects a natural evolution of language to describe climate conditions.

The term 'warm-weather' has consistently referred to conditions or characteristics associated with warmer climates or seasons.