With all of the snow, my grow is locked up for a week

With all of the snow, my grow is locked up for a week. My summer grow didn't go so well and I started a number of plants late in the season. I was successfully able to move them into the shed and keep them going. I later added heaters to keep them at a nice constant temperature. All is going well considering, but now combined with the holiday and the snow this past few days I will be unable to get back into the shed for a week. I watered Friday, now it's Sunday and I will be away tomorrow through Saturday. I hope I will even be able to get in the shed then too as a little ice can cause a delay until I get rid of it.