Lambton Public Health has a Cold Weather Alert posted.
The alert is the sixth of the season and is an extension of last week's Cold Weather Alert, with the temperature expected to drop to minus 15°C Tuesday night.
Environmental Health Specialist Paul Buttery says there has been little relief from the cold temperatures experienced last week.
This current alert will remain in effect throughout the coming week as nighttime lows are expected to hover around -20°C.
All residents should take precautions by dressing in layers, shielding exposed areas from the wind like the head, neck and face and limiting time spent outdoors.
Lambton Public Health advises local agencies that provide shelter and assistance to the homeless to prepare for an increase in demand.