Yellowknife is forecast to receive its coldest nights since the end of April as temperatures dip in the last week of October.
Environment and Climate Change Canada's seven-day forecast for the city, as published at 5am on Friday, calls for a low of -16C overnight between Friday and Saturday.
While Saturday is forecast to be milder, temperatures will drop again through Sunday and Monday, meteorologists said.
Monday is currently forecast to reach a high of only -11C – about eight degrees below the average high for October 28 – though the remainder of the week is expected to warm a little, hovering around normal temperatures for the time of year.
The first half of October 2019 was noticeably milder than October 2018. This year, October 3 reached a high of 14C.
This year's Halloween forecast currently calls for a mix of sun and cloud and a high of around -3C.