In freedom units, as viewed from New Mexico, where humidity is typically under 50% and often below 10% in the summer:

100 = hot or “sweltering” just because I like the word. 90 - 100 = hot 80 - 90 = warm 70 - 80 = comfortable 60 - 70 = cool 50 - 60 = chilly 35 - 50 = cold < 35 = freezing