Short Answer 
To protect your home from frozen pipes during cold weather, inspect and insulate exposed pipes, allow both cold and hot water to drip from faucets when temperatures drop, and regularly monitor the water flow to ensure they remain unfrozen. Taking these preventive measures can help avoid plumbing emergencies.
Step 1: Prepare for Cold Weather
Before the extremely cold weather hits, ensure that you inspect your home for any exposed pipes. These pipes are more susceptible to freezing when temperatures drop. Particularly, focus on areas like attics, basements, and exterior walls. Take preventive measures to insulate these vulnerable spots to minimize the chances of freezing.
Step 2: Let Water Drip
When the temperature is forecasted to go below freezing, it is advisable to let the water drip from your faucets. This small action can significantly reduce the risk of your pipes freezing. Make sure to allow both cold and hot water to drip to ensure thorough protection for all pipes in your home.
Step 3: Monitor Water Flow
Regularly check the drip to ensure that water is still flowing, especially during prolonged cold spells. If you notice a change in pressure or if the water stops dripping, take immediate action to further insulate the exposed pipes or let more water flow. This constant monitoring becomes crucial in very cold weather to avoid any plumbing emergencies.