Welcome to Hardwater Fishing!
As mentioned above, the lack of sunlight and long nights of below zero temperatures are all good at building ice. It's warm wind that eats ice more than anything.
Last year, on a solo overnighter on a Southern Alberta lake, the temperature rose significantly, well into the plus side of zero - and after dark. This was shortly after the ice was drivable, with 15" of good clear ice to drive on.
Around 2am, I awoke to a full on downpour. Pouring rain and some intense winds. This lasted for more than 3 hours, and I began to worry that I might sink
alongside my truck. Being so worried about it, I fell back asleep.
The next morning, I exited my tent to find the ice in good shape and truck still on top. Total ice loss was less than 1/4".
Just be mindful of ice conditions, and play it safe. No bites are worth your life.