Snow dates - day of first snow the last ten years here in Oslo, defined as at least 1 cm on the ground in the morning. That means that the snow drifting down outside now probably won't count - unless it statys put until tomorrow morning... lets hope it does NOT.

Varies from the 16. of October back in -92 and -93 to as late as 27. of December in 2000 (a rainy christmas if I remember correctly)