I actually made lists for dramas / movies of each season.. I don't know if you'd agree with where I've put the dramas, I just put them in the list of a season they gave me the feeling of, so here are the lists I made:
http://mydramalist.com/list/O3odnpa4 http://mydramalist.com/list/84Jjga74 In my opinion, the most winter-like drama out of those I've seen is Uncontrollably Fond, and the most fall-like drama is Cheese in the Trap. However, I'm not sure how much of a warm feeling they give off. :'D Hope you find something you'll enjoy though, even though the lists are not long. (I have more dramas on my lists for spring and summer.)