"The coldest winter I ever spent was a summer in San Francisco."
(While usually attributed to Mark Twain, the actual source of these words of wisdom is unknown - there is no evidence that Mark Twain ever said this.) from: http://www.nps.gov/alcatraz/
The trick to SF's summers is that they occur later in the year (the Indian Summer) we get our best weather in September/October (heck today was awesome)
"The coldest winter I ever spent was a summer in San Francisco."
(While usually attributed to Mark Twain, the actual source of these words of wisdom is unknown - there is no evidence that Mark Twain ever said this.) from: http://www.nps.gov/alcatraz/