Newsflash, nads. This ain't Sandy Eggo. People don't go dashing for the parkas when it hits 65 like they do there.
It's been in the low 60's here the last few days, and were it the weekend, I'd be not only in a t-shirt, but (gasp!) SHORTS. Matter of fact, I see people up here all the time wearing shorts well into the 40's. I don't even bother with anything heavier than a light fleece or sweatshirt until we hit the mid- to low-20's. I wear thermal underwear maybe once or twice all winter, when it's -15 or lower with a windchill below -30.
Suck it up, nads--yes, they're dancing on the flag. Yes, you own this shit.