If it had kept raining in Dallas on Nov. 22, 1963, would it have changed history? Several books and articles have pondered this question. President John F Kennedy greeted a crowd on a misty morning rain in Fort Worth at 8:45 a.m. central standard time. The weather in Dallas had been rainy, but the sun came out before the president's plane had landed. The plexiglass "bubble" top had been removed from the car. The Secret Service knew the president preferred not to use the bubble, unless it was inclement weather, according to media reports.
Paul McCardell, The Baltimore Sun