too cold to go out?

ok im a little concerned about my 'newest" purchase.. 6 x 8 week old chabos....
the woman said they have lived outside until now with no problems....but she failed to mention if that was under their mothers or not!

will it be too cold for chabos so young to be outside? their 'house' is just 12mm wood, not insulated.... its around 50 degrees F here in the day at the moment and between 40/45 at night