Chance of showers during the 2008 Beijing Olympics: 50 percent. But Chinese meteorologists have a plan to bring sunshine. The meteorologists say they can force rain in the days before the Olympics, through a process known as cloud-seeding, to clean the air and ensure clear skies. China has been tinkering with artificial rainmaking for decades, but whether it works is a matter of debate among scientists.

Weather patterns for the past 30 years indicate there is a 50 percent chance of rain for both the opening ceremony on Aug. 8, 2008 and the closing ceremony two weeks later, said Wang Yubin, an engineer with the Beijing Meteorological Bureau.