There are winter moths that fly whenever daytime temperatures rise into the mid-fifties and remain above 50F into the evening hours. They vary in size from tiny to medium. Here are a some from this month. The first, Acleris flavivattana, showed up on my moth sheet in Carroll County, VA on 3/16. It's a highly variable Tortricid, Multiform Leafroller Moth. It's actual length was about a half-inch.
The lower two are Eupsilia vinulenta, Strait-toothed Sallow. The moths came to my bait stand on 3/11. Although one has orange reniform spots and the other has white, they are the same species. The moths were approximately an inch in length.