It is cold in Ottawa. Yesterday was -18ºC (0ºF), and that was warmer than the day before.
We get lots of snow, plus this kind of thing:
While I’d rather have this:
Or perhaps this:
All of these environments present problems for cameras, through. Cold, heat +sand, and humidity, respectively.
Always carry a spare battery; keep your camera clean; do not change lenses when there’s dust; and when in the cold, carry your camera back inside within a plastic bag and keep it in that bag until it warms up.