A few weeks ago somebody (rumrum6 ?) said their wheel didn't spin nearly as freely in cold and I wondered it might be due to something like this.

Might have been just the grease though. I had a Nissan car from the late 80's with a manual transmission. It took some extra oomph to get that shifter to move when it was really cold. Got better as the transmission warmed up. I eventually started using a different gear oil with better winter operating characteristics and that helped a lot.

Only saying this because lubricants can really be affected by cold and it wouldn't surprise me if it made a significant impact on bikes.