On Monday, the forecast in Fort Liard called for Monday and Tuesday highs of 32C.
Residents were urged to watch for signs of heat illness, like swelling, rash, cramps, fainting, or heat exhaustion – and to make sure they, their relatives, and neighbours were cool and drinking water.
The threshold for heat warnings is different for each region of Canada.
In the Northwest Territories, advisories are triggered when daytime highs are expected to reach 29C, and nighttime minimums remain at 14C or above, for two days in a row.
By contrast, some areas of British Columbia need daytime highs of 35C for a heat warning to be issued. Other parts of Canada – like the Yukon and some Atlantic regions – have a lower threshold of 28C.