You are lucky you live up north, as your water temps are still not as warm as they are down here. So, that's a plus.
This is why it's imperative for folks to always have a back up pump on hand just in case of emergencies. It doesn't need to be expensive, it just needs to get you through a negative situation temporarily.
At worst, you should have a good air pump to drop in to get oxygen in--but a spare water pump is best.
In case of a power outage, they do sell battery operated air pumps to get you over a small, temporary hump, too.