ok..
afaik the "freezing point" is not the real freezing point like known from water but the minimum temperature the fuel is approved for . main limit is the viscosity usable for the pumps as well paraffin flocking in the filter which is bypassed then .
so put margins on it and answer yourself - nothing will happen when you go lets say -42 deg.
btw - jet a without any icing inhibitor is in nowadays very rare and when i,m right only used in usa anymore , mostly jet a1 with a lower minimum temparature contrailes the cold skies.
cheers !