The president of the United Firefighters of Winnipeg said the holidays were trying for fire crews across the region.

Since Thursday, there was a fatal trailer park fire in Ile des Chenes, three house fires in Winnipeg, a business fire in Kenora and an apartment block fire in Thompson.

In each case, firefighters had to battle the blazes in extreme cold.

RELATED: Winnipeg family forced out of home Friday after fire on Pritchard Avenue

Alex Forrest told Global News frostbite can be a real threat to fire crews. He said the first crews can get very wet quickly as they begin to pour water on the blaze and ice quickly forms on their protective gear.

Forrest said that rotating crews in and out during a fire is critical to success.

In the latest incident, fire broke out in a two story housing unit Monday morning on Marlene Street in St. Vital. Crews were able to prevent it from spreading and there were no injuries. The cause remains under investigation.

The RCMP and the Office of the Fire Commissioner continue to investigate another blaze: Sunday’s fatal fire in Ile des Chenes.

The fire claimed the life of a 30-year-old woman.

READ MORE: One woman dead after Sunday morning fire in Ile des Chenes

The name of the victim has not been released.