I don't know that it is the temp that is getting to me as much as the dark. I realize that we are gaining light each day, but when it is overcast it doesn't seem like it. Be this time of year, at least up here, you begin to identify with the groundhog -- living in a dark tunnel.
But in the spirit of gardening I will also adopt the glass half full approach and hale coming spring. Just isn't coming fast enough.