known as an Indian summer.
You know the famous Mark Twain quote: "The coldest winter I ever spent was a summer in San Francisco."
The running joke around here is that it's warmer during the first half of the 49ers season than it is for the Giants .. especially when they played at Candlestick Park.
The wind is MUCH worse there than it is at the new stadium.
Here's an interesting explanation:
Why Pacbell Park isn't Too Windy: A UC Davis Expert Saved the GameBACKGROUND: In July 1995 the officials of the San Francisco Giants baseball team asked White, a professor of mechanical and aeronautical engineering and an authority on Bay Area winds, to evaluate their plans for a new waterfront stadium in San Francisco. He reviewed the stadium design and made suggestions about reducing wind problems. Then he tested scale models of two designs for the park -- the original plan and a modified plan, based on his suggestions. He gave the Giants a startling answer: Either design would be much windier than the team's existing home at Candlestick Park, which was widely despised for its wind problems. But White also provided the solution: rotate the second of the stadium designs 90 degrees. That's just what the builders did.
White has also used wind tunnels and scale models to study urban air pollution, San Francisco skyscrapers, and sandstorms on California's dry Owens Lake and on the planet Mars.
The UC Davis wind tunnel has a fan that is 8 feet wide and powered by a 75-horsepower motor. It can produce wind speeds up to 20 miles per hour. The PacBell scale model is built at a scale of 1 to 600, so one inch equals 50 feet. The model is approximately 4 inches tall and 18 inches wide.
Wind speeds in the scale model are measured by "hot-wire anemometers," small heated wires, attached to a probe system, that are cooled by airflow over them.
http://www.news.ucdavis.edu/search/news_detail.lasso?id=5039