40 degrees and you're out in t-shirts???? Whoa!! Brrrr......
lol lets see 40 is around +5*C here yup tang top weather, and if its windy toss on a light windbreaker then again I come from the land of everyone rushing outside when its -18*C to bask in the sunshine lol well in the winter anyway in the summer that would be cold, cuz in the summer the average temp is 104*F