Yeah, like the PP said, the weather is being weird lately. In two weeks, who knows! Today it is sunny and warm, tomorrow is supposed to be cold and gray. Just keep an eye on the weather. I usually wear a long-sleeve over tank top with jeans in the early morning, take the long-sleeve off during the afternoon when it's warm (if it is), and then put the long-sleeve back on at night when it gets cooler. If I'm staying really late, I'll go back to the hotel to change or bring a thicker hoodie along, as at night it can be low 50's, even when it's 75 during the day.