These temperatures may make you want to crank your heat, but that can also crank up your bill.
A lot of us who want to keep that heat inside are allowing too much of it escape.
Directors at the Knoxville-Knox County Community Action Committee offer some simple tips to make sure your heat stays inside your home.
Jason Estes, the director of Housing and Energy Services, said bundling up inside your home and using extra blankets when you sleep will make a difference. He said keep your drapes and blinds closed and put towels around the edges to prevent drafts. He also said know where to turn off your water and keep your faucets dripping.
Estes said one of the most important things is to make sure you have working smoke alarms and carbon monoxide detectors.
"Because with all this everybody is turning on their heat more and more. you got fireplaces, they might even bring some un-vented space heaters in, like kerosene heaters," Estes said. "Those are all potentially dangerous."
If you need help paying your utility bill, you can apply to the Low Income Home Energy Assistance Program. The CAC also has weatherization programs, but Estes said there is a waiting list.
Susan Long, the director of the Office on Aging, said it's important that you check in on your elderly neighbors in this weather.
"It could be that they're not able to work the thermostat for whatever reason or their heat is not working well and you certainly want to be available to help them out," Long said.
Long said elderly folks should bundle up inside their homes, and she suggests going to libraries or senior centers to stay warm and active.
The Office on Aging is also collecting heaters for senior citizens ages 60 and older. If you want to donate, call 865-524-2786.