Many many tens of films I am afraid. With the new batteries it was like 30-40 films for sure (I dont own the camera any more).
According to the manual, operation temperature range is from -10°C to +50°C.
However, if you are using camera now outside due to the extreme cold the batteries will drain very quickly.
I think I average around 20rolls every two years (over 10 years) with each pair of Duracel or Energizer I use. The only thing I've notice is that sometimes the battery indicator is usually mostly full through the two years and then drops off to the blinking 1 bar close to the two year mark.
The only time I have had a drastic battery drain was that I left the power switch on with no film and I'm guessing the shutter was being slightly depressed while it was in my bag.