I tried to leave on day three but my gear cables were frozen from the rain turning into snow and frost, so I ended up staying 2 more days. Maybe for the best, as the strong headwind would have made it freezing cold. I have a good sleeping bag but only to -9C, so it was pushed to the limit. Wearing several layers of clothes in the sleeping bag helped me keep warm though I struggled with my feet getting very cold every time I went outside half an hour for eating - my sneakers are really not made for this kind of weather...