The City of Toronto cancelled an extreme cold weather alert Sunday afternoon after residents shivered through bone chilling temperatures for two days.

The alert, which was issued Friday, came as weather dipped into the negative double digits.

An alert is issued when Environment Canada predicts a temperature of -15 degrees Celsius or lower, without wind chill.

Despite the frosty weather of the past few days, police are warning residents that the lakes and streams in the Greater Toronto Area are still not safe for winter activities.

This comes after a number of snowmobilers fell through the ice north of the city over the past few days.

Around 8 p.m. Saturday night a snowmobile and an all-terrain vehicle towing a trailer fell through the ice on Lake Scugog near Whitfield Road.

All five people were able to make it safely to shore and were taken to a hospital in Port Perry with minor injuries.

And one day earlier emergency services were called after a snowmobiler fell through the ice on the east side of the lake. The snowmobiler was pulled from the waters by a friend, but were rescued by a police helicopter after the men were uncertain of their location. They were also treated and released at the Port Perry hospital.

Durham Regional Police said investigators have since surveyed the lake using infrared equipment in an aircraft and have spotted large open areas of water as well as very thin ice throughout the lake northeast of Toronto.

"With the weather that we have had lately, people might think that the ice is a lot thicker than it is and it is really not that thick," said Durham Regional Police Insp. Mario Lessard.

Temperatures are expected to warm up over the next few days across the province, hovering near 2 C. However, there is a threat of rain or snow hitting the region on Monday night.