Hello M I would love to be able to give you a definite answer but I'm affrad I can't.
I'm prehaps one of the worst people for harvesting too soon

If it's the cold that you are worried about, well the cold does slow down a plants metobolic rate. However as long as they are protected from frost they should be ok
At the present the only heat I have in my growroom is a 400 watt light and when that is off a night there is no heat at all. The outside tempretures are regulary falling bellow freezing. I've grown quite a few crops at this time of year in these conditions and they always produce an harvest.

Sorry I really can't give you an answer

love mand xxx