The coldest winter I ever spent was a summer in San Francisco. Origin unknown, often falsely attributed to Mark Twain.
I attended a Giants game at ATT Park this evening, and I gotta say, of all the American major league cities I have been in, having a baseball team in San Francisco makes less sense than in any other. It was 57F when I and my companion for the evening drove away from the ball park, and that's not even counting the wind chill up in the stands.
When a Polar Fleece pullover is not warm enough for a game two months into the season, something's not quite right.