Last night was frigid here in West Pa......once temps drop to single digets I am not a happy camper by any means - anything below the 30’s means I have to adapt to a third heating unit - which always means my heating bill will rise.
The alternative is go to bed early - fire up the oven for 5 minutes in the morning to take the chill off.
At any rate single digit temps are always bad!
Hope it warms up for you soon.