Depends. Some years it's nice. Others it's storms worse than summer. - IndyandMarion  914.3 #1 10:27PM

Like Indy said it depends all three times I have been to WDW it was in Jaunuary. Typically at least for when I have gone its mostly overcast with late rain off and on, not an awful lot of sun. The temperature can vary pretty drastically sometimes. Just last Jaunary when me and my brother went for a week the first three days were a comfortable low 70's high 60's then the day we went to MK it stopes into the 50's with a windchill that made it worse we both got a little sick due to a lack of proper jackets, but it was worth it being in Disney. The crowds are light besides some days have an abundance of foreign tour groups. Just go prepared and you will be alright. A little chill and some rain in Disney is better than feet of snow at home at work/school. - ShaggySmith  10.4 #196 11:59PM

We've always had great luck in January, but it can vary. Pack/wear layers. It's been nice and warm most visits, but never warm enough for wate parks. Love low crowds though! - timonT  209.5 #23 12:02AM