It was "boiling hot" when we were there, for a pasty English bloke it felt like the hottest summer on earth, though a little chilly in the mornings. A trip over the Golden Gate Bridge on an open top bus was practically sub zero, and I think partly responsible for the ear infection Ive come back with!
Most of the pony tailed guys I saw were in the Haight Ashbury area..Hippy Land?