"A siberian isn't who don't feel cold, a siberians is who warmly dress." folk wisdom
"We have a nice have worked and will nice rest..." don't remember autor.
Just be yourself, but remember, that you'll in other culture... and learn russian language and you'll have no problems with society.
And may be be ready to joks - a man from Africa in Siberia (moreover at so north) is already comic situation.
Hanty-mansiisk city is pumped with the oil money. Other towns may be rather poor and isolated. So be careful about your destination.
As of the weather - human is a wonderful creature who can adapt to anything. Buy more warm winter clothes.
60% of all Russia's oil is from that region. And... Russians killed indigenous people to get those delicious oils from there. Uh... In short, I really don't care.
You probably should not. Industrial Siberia can be quite harsh especially in the winter.
Guys i need a answer from someone who lived there once .