Might be a good idea to run the heat a little warmer than usual tonight. I usually let most of the house coast at 50 but I'm warming the whole place tonight. With the bitter cold expected , just a spot that leaks air in a corner or through an outlet could cause a pipe to freeze if in the unlucky wrong spot. Might be worth spending an extra $10 tonight just as insurance.
Long ago when I lived in the slums in worcester , we used to keep things really cold in the apartment. One morning there was ice in the toilet bowl
no lie.
We often let the water run a trickle in the sinks to prevent freezing on the predicted cold nights (it gets seriously cold in Worcester sometimes). The nights when it did freeze were very cold but not the predicted worst. it was when maybe 0 degrees was coupled with high winds. kind of like tonight. The wind drives that cold into a weak link in the house structure and all it takes is one place to burst to cause a real mess and sometimes a lot of expense.
Anyway , worth thinking about tonight!