Yellowknife weather in December
December in Yellowknife: freezing, dry, with clean air — not the time — well below freezing.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in Yellowknife · #1395 of 1413 destinations to visit in December · comfort 24/100 (tier F)
- Days
- -17°C
- Nights
- -25°C
- Wet days
- 4
- Sun
- 1.2 h
- Humidity
- 79%
- Daylight
- 5 h
Traveller notes on Yellowknife in December
Other months in Yellowknife
Forum posters cite an average January temperature around -26C in Yellowknife, with some visitors reporting even colder stretches near -30C, one specifically recalling snow falling alongside that cold during an early-January visit. Posters consistently rate January favorably for aurora viewing precisely because of the long hours of darkness, though posters are direct that success still depends on both clear skies and active solar conditions lining up - overcast skies can shut out even strong aurora activity, and a short 3-4 night stay carries no guarantee of a sighting. One visitor's early-January trip, despite the -30C cold and snow, still caught the northern lights on two of three tour nights. Posters generally recommend serious cold-weather gear and a longer stay if possible to improve the odds of a clear-sky night.
Yellowknife is the aurora town, and July is the one part of the year you cannot see the aurora — nearly twenty-four hours of daylight, with civil twilight at midnight leaving the sky far too bright. The forum is direct about it: summer here offers neither the night-less spectacle nor the winter wonderland the place is known for. What July does give is 22°C days and easy driving, which runs June to mid-September. The other caveat is bugs, which regulars call genuinely bad in midsummer; late August and early September are their picks — fewer insects, better kayaking, and the aurora back on the table.
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Yellowknife climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Yellowknife in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsChristmas Day closures, Winter / Christmas break in Canada, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Yellowknife's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherYellowknife's weather peaks June–August, best around July.
December coincides with Deep winter cold.
Best weatherFair weatherToughest weather
What's on in Yellowknife in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Aurora season
15 Aug – 10 Apr · usuallyBook earlyIt splits in two: late August to September, when the lights reflect off open lake water and the nights are mild, and the long cold half from November. The city sits under the auroral oval, so clear nights deliver more often than not.
- Hazard
Deep winter cold
1 Dec – 28 FebExtreme coldMinus forty happens most winters and the aurora tours hand out full snowsuits because standing still outside for three hours at that temperature is not a thing you improvise. Vehicles stay plugged in. Source ↗
- Opening
Ice road season
20 Dec – 31 Mar · usuallyIce seasonOnce the bay freezes thick enough, a plowed road opens across it to Dettah and the winter roads north start carrying trucks. Load limits rise through January and the whole thing melts out by April. Source ↗
- Holiday
Christmas Day closures
24 Dec – 1 JanChristmas & New YearClosuresChristmas Day is a statutory holiday nationwide: most shops, museums and many restaurants close and transit runs a holiday schedule. Boxing Day brings sales crowds to the malls where it is kept, and 1 January is another quiet, mostly closed day. Source ↗
Where is Yellowknife?
Yellowknife in December — FAQ
- Is December a good time to visit Yellowknife?
- December in Yellowknife: freezing, dry, with clean air — not the time — well below freezing. It ranks #12 of 12 months for Yellowknife on SeasonMap's comfort score (24/100).
- What is the weather like in Yellowknife in December?
- In December, Yellowknife averages a daily high of -16.7°C and a low of -24.8°C, with about 11.1 mm of rain over roughly 3.9 rainy days.
- What is the air quality in Yellowknife in December?
- Yellowknife has a mean US Air Quality Index of about 33 in December.
- Does it snow in Yellowknife in December?
- Yellowknife sees roughly 21.2 cm of snowfall in December.