Morning mist at Kennedy Space Center. The VAB is in the background. It is about 7 am Wednesday, July 6, 2011. The Cape is one scenic place with gorgeous sunrises and sunsets, birds, and evening and morning mist.
The morning mist on Wednesday, July 6, 2011, would burn off quickly and the day would be breezy and increasingly hot as the day progressed.
By Friday, July 8, the first day of the launch window, rain was expected to settle in staying until Sunday, July 10, 2011.
NASA’s flight team have been known to launch even if the weather is generally miserable. If weather is acceptable at the launch site, they will go. Acceptable means no rain or lightning within a 20-mile radius of the launch pad.
STS-134, the previous launch, lifted off into low clouds and vanished a mere 25 seconds after launch.