DirectAnywhere
ATC Minimum Vectoring Altitude (MVA) may not be increased due to cold temperatures. In Canada, MVAs are increased during cold weather operations. The FAA does not provide the same service. The flight crew should consider this if the aircraft is being vectored at MVA in extreme cold weather.
That is actually incorrect. All ATC MVA clearances in the US are corrected for low temp operations. We operate about 63 pax services plus about 30-40 freighter services a week to the US and our Ops manual is quite specific about it.
Radar vectoring altitudes assigned by ATC are temperature compensated and require no corrective action by flight crew member.