will be travelling to Beijing on jan 2013, give us some info how cold that month is.we're from phils

Actually, for you guys from Phils, March of Beijing is a little cold. The average temperature is about 6 C and the lowest temperature could be 0 C. In Beijing, heating is usually stopped on March 15. Thereafter, people have to bear one to two weeks’ coldness until the end of the month when it would become warmer.
Therefore, sweater and thick jacket are suggeted in early March, but you need take a spare cotton-padded jacket, gloves and hat as well in case any unexpected strong wind or temperature fall.