I guess it's too late since I live six hours away, but here's my two cents anyway. When it's too hot for dark colors at a funeral, stick to neutrals and stay away from primary crayon and bright prints.
Any gray, white or blue linen trouser can be combined with a loose jacket. Add a print camisole underneath (or sleeveless blouse) in a geometric or understated floral print etc. Stick to small jewelry and compensate with a pair of nice sunglasses....finish the look with leather shoes and a small purse.
Old sayings with a theme 2 ( continuing *nanna8*'s thread)