What is the weather like in Bejing on Jan 6 to 13? Where to buy cheap thermal wear around Beijing Dongsi Super 8 Hotel?

I am going to beijing on 6th until 13th January 2011. i would like to know the weather on that date and what should i wear. 1 more thing i want to ask you where i can buy a cheap thermal wear n fur coat at beijing? because i will stay at Dongsi Super 8 Hotel, Dongcheng District.