IF YOU DON'T LIKE IT, WAIT. Thursday: shorts and polo shirt for receiving exams. Sunny and low humidity. Friday: jeans and a sweatshirt for grading exams. I was being too responsible and missed all the excitement when a train broke a coupler knuckle and tied up downtown for two hours. Not newsworthy. Blustery and raw, with thunderstorms all around. Saturday: shorts and t-shirt for grading exams. Good news, bad news. Sunny and high humidity. Not the best conditions for dressing up for graduation, but people are putting on a good show. Thunderstorms overnight?