This week-end was quite special. We had first -12°C during the day on Saturday. Then -14°C during the night from Saturday to Sunday.
Sunday was much more warm, about -3°C, but with 15 cm snow and a very strange light.
(Canon EOS 5D Mark II, EF17-40, ISO 3200, post-prod with DxO Optics Pro v6.1)
Some other pictures on visuals.didierbeck.com.