Sun rarely shines in St. Petersburg in winter. (Not that it shines often in summer though.) When it shines, it usually frosts. It becomes so bright outdoors because rays of the sun reflect from the white snow:
When I took these photos, it was −23°C. On such days you really feel it’s winter. Everyone walks very fast, from one point to another. When I opened the door of my car, exhalation was swirling out of it.
Last two days were also sunny. It was about −5°C, so it wasn’t very cold. And it’s so wonderful to see the clear blue sky instead of the grayish clouds.