Welcome to the forum and congratulations on choosing to raise chickens!
I am completely biased as I love the two breeds that I have so I'll say that right up front.
We have Plymouth Barred Rocks and love that they are a 'Heritage Breed'
as we want to support that and we also have Welsummers.
Both of these breeds are heat and cold hardy and should do well in your climate provided they have the kind of protective coop support as well as
heat to keep their water from freezing in winter and lots of ventilation for
the heat as well as access to protected outdoor run.
BRs - at least ours - lay very large brown eggs all year long even w/o added light to their coop in winter. Each hen consistently lays 5-6 eggs per week which is a very high number. We do not keep our birds as 'pets' and so they don't like to be touched - we've raised them from day olds. We had two roosters in our flock and the 'non-dominant' rooster attacked my DH one too many times and went to freezer camp. The other 'dominant' rooster is a wonderful bird who tends and cares for 'his hens' and pretty much 'ignores'
my husband and I which is fine with us. BRs are 'normally' docile but
moderately active birds and for us the breed has been extremely 'low maintenance' and extremely hardy and vigorous.
Welsummers are the 'movie stars' of the chicken world, at least in my view
because they are such gorgeous birds AND they lay those extra large mahogany and terra cotta colored dark eggs with the speckles! Cornelius - the Kellogg's corn flakes Rooster was a Welsummer - need I say more about 'eye candy'? Welsummers don't lay nearly as often as the BRs and they really slack off when the days get shorter but for the dark eggs, inquisitive and gentle personality, their unique dark eggs and the wonderful low volume lyrical cooing/trilling sounds they make when communicating w/one another - precious!
I'm sure you will receive many suggestions on type of bird as we all have our favorites and all for various reasons. Good luck with whatever breed(s)
you choose - but be careful as having chickens can and does often become addictive!
Elaine Carey-Goble
Mountain View Farms
Ellijay, GA
http://www.realtimefarms.com/source/5128092/mountain-view-farms