Well it is winter, however even by China's standards there is a decent cold snap ongoing. Just spoke with a friend who is currently living in Guangzhou and maxima there have generally been below 8C and as low as 5C over the last few days (prior to that it was unseasonably warm!).
http://weather.news.sina.com.cn/ or of course weather underground. Note that Guangzhou is at 23N and enjoys the same warm season mugginess as Hong Kong -- gotta love those continental effects
Across Gansu province, where my colleague's wife currently is (complaining
) there have been days of sub -20C.
Into the real cold country (eg 'Inner Mongolia') and it is has been consistently below -20C and down to almost -40C:
eg Tulihe is at 733 metres - check this out for a forecast:
Tuesday
Scattered Clouds. High: 0° F. / -18° C. Wind WNW 6 mph. / 10 km/h.
Tuesday Night
Overcast. Low: -34° F. /
-37° C. Wind NW 6 mph. / 10 km/h.
Wednesday
Partly Cloudy. High: 4° F. / -15° C. Wind WNW 6 mph. / 10 km/h.
Wednesday Night
Overcast. Low: -31° F. / -35° C. Wind West 6 mph. / 10 km/h.
Thursday
Overcast. High: 6° F. / -14° C. Wind West 6 mph. / 10 km/h.
Thursday Night
Partly Cloudy. Low: -25° F. / -32° C. Wind WSW 6 mph. / 10 km/h.
Friday
Overcast. High: 4° F. / -15° C. Wind light.
Friday Night
Scattered Clouds. Low: -29° F. /
-34° C. Wind light.
Saturday
Scattered Clouds. High: 3° F. / -16° C. Wind light.
Saturday Night
Partly Cloudy. Low: -27° F. /
-33° C. Wind light.
Sunday
Overcast. High: 4° F. / -15° C. Wind WSW 6 mph. / 10 km/h.
Sunday Night
Partly Cloudy. Low: -29° F. /
-34° C. Wind WSW 6 mph. / 10 km/h.