Federal forecasters have issued a severe thunderstorm watch for the Alberta-NWT border, Fort Smith, Fort Resolution, and Highway 6.
Some parts of the NWT could see temperatures above 15C this week. Fort Liard and Fort Smith will be hot spots. Even Yellowknife is set for 11C on Friday.
Some parts of the NWT are about to get a 30-degree swing in temperature, the forecast suggests. Expect highs of 10C or warmer in some communities by Thursday.
Yellowknife is expected to have clear skies on Saturday night and a geomagnetic storm may emerge overhead, setting up what could be perfect aurora-viewing.
Up to 25 centimetres of snow is expected to fall in communities around Great Slave Lake on Saturday night and into Sunday, federal forecasters said.
Much of the Northwest Territories has been placed under an extreme cold warning with temperatures set to drop over the next few days.
Extreme cold warnings fanned out across the Northwest Territories on Thursday evening, with days of bitter cold ahead for many parts of the North.
Environment Canada issued a snowfall warning for the Tłı̨chǫ region and a blizzard warning for Ulukhaktok.
Environment Canada is warning of blizzard conditions in Ulukhaktok from Tuesday afternoon until Wednesday morning.
Yellowknife's Christmas cold snap will continue into the weekend, federal forecasters warned, with wind chill values hovering around -50C.
Environment Canada is warning residents in Norman Wells and Tulita of extremely cold temperatures on Monday night and Tuesday morning.
Environment Canada issued an extreme cold warning for Yellowknife and Tłı̨chǫ communities, with temperatures expected to dip toward -50C with wind chill.