Gary,
I did a bit of poking about on Google and found the following snippet from a place called Ekaterinburg, it's close to Siberia and I'm not sure EXACTLY where you're going but this may help. If you could tell me where you had in mind more specifically, I may be able to find some more detailed information.
Snippet:
In January, the coldest month of the year, average temperature is -16 -17°C (3-1 °F) Sometimes (very rarely) it becomes as cold as -40 °C (-40 °F). Thaws in winter are very rare.
During long winter there is a lot of snow in the city and it melts down by the end of April. April and May are two dirtiest months as all mud lays on the streets.
July is the warmest month of the year. The average temperature is 18 °C (64 °F). The hottest temperatures are 35-38 °C (95-100 °F).
Summer ends in late August with first frosts coming to Urals.
"Indian Summer" in the middle of September is short but very nice.
First snow falls in the beginning of October, and finally covers the city in early November.
Swimming in the lakes is possible from June till August.
End Snippet
As for cold weather gear, if you're going to go plodding about and wanting to stay really warm this may be for you (
http://www.northernoutfitters.com/p...Sportswear&category_name=Artic&product_id=110) they're $209 CAD or you could try and get some yetti gaitors for the boots suggested below or any other type of boot.
I hope this is slightly useful.
Joe