Na… I take a shorter warm up when it’s cold. For example I just stick to the jog to break a sweat then hit a few gradual 20’s then 1-2 hard ones.
The reason I do this is because if I sit around or take my time when it’s cold out I loose the body heat just from sitting around and taking my time.
Mind you, it needs to be REALLY cold out in order for me to make this adjustment.