Forecast confidence: Medium· models disagree by 2°C
Yellowknife weather
Loading live data…
Cloudy,warmer tomorrow
Env. Canada, the European and the American model put Yellowknife's high today between -3° and -1°, a 2° split. Tomorrow: cloudy, around 2°, with a 0% chance of rain.
Yellowknife swings 48°C across the year, from 22°C highs in July to -26°C lows in January, and July is usually the wettest month in a year that brings about 394 mm of precipitation. Over 10 years of recorded weather it averages 8 days a year at 25°C or above, 215 frost nights, and rain on 69 days.
Warmest month
July
22°C average high
Coldest month
January
-26°C average low
Wettest month
July
394 mm a year
Comfortable
2 months
June and August
Residents
20,000
share this forecast
Most accurate here
European
90/100 CheckWeather Score
Warm days
8 days
a year at 25°C or above
Frost nights
215 nights
a year below 0°C
Rain days
69 days
a year with 1 mm or more
Day counts are from the ERA5 reanalysis for Yellowknife’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.
The weather map: all three models at once
Env. Canada, European, American side by side around Yellowknife and nearby towns.Live rain radar →
Loading the three model maps…
Yellowknife hourly forecast: next 14 hours
consensus of the three models
Rain in the next 24 hours, model by model
each model's own hourly precipitation, side by side
Loading the three models…
Yellowknife 10-day forecast, out to 14 days
where the models agree, and where they split
Today
Cloudy
-2°-6°
±2°
Tomorrow
Cloudy
2°-5°
models agree
Mon
Cloudy
3°-2°
models agree
Tue
Cloudy
-1°-5°
models agree
Wed
Light snow
-1°-6°
models agree
Thu
Light snow
0°-2°
±3°
Fri
Cloudy
1°-1°
models agree
Sat
Cloudy
1°-2°
models agree
Sun
Light snow
1°-3°
±4°
Mon
Light drizzle
1°-3°
models agree
Tue
Cloudy
2°-2°
±3°
Wed
Cloudy
0°-4°
±5°
Thu
Cloudy
2°-1°
models agree
Yellowknife, Northwest Territories is at its warmest in Jul (average highs near 22°C) and coldest in Jan (lows around -26°C), with roughly 394 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Yellowknife right now, and see exactly where they disagree.
average daytime high and overnight low across a typical year (1991-2020)
Jan
-20°
-26°
Feb
-18°
-25°
Mar
-11°
-19°
Apr
-2°
-9°
May
10°
-1°
Jun
19°
10°
Jul
22°
15°
Aug
19°
12°
Sep
11°
5°
Oct
0°
-4°
Nov
-10°
-15°
Dec
-17°
-23°
Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How Yellowknife's weather has changed since 1995
30 years of daily data, 1995-2024, shown as change
+0.2°C
Around Yellowknife, the difference between 1995-2004 and 2015-2024 is +0.2°C, within the normal swing from year to year.
1995each stripe is one year2024
cooler than averagearound averagewarmer than average
Days above 25°C
2 fewer days a year
2015-2024 against 1995-2004. Within the normal year-to-year swing
Frost nights
4 fewer nights a year
2015-2024 against 1995-2004, below 0°C. Within the normal year-to-year swing
Average wind
no clear change
2015-2024 against 1995-2004. Within the normal year-to-year swing
Bars: each year against the area's 30-year average. Dashed lines: the average of the first and the last ten years.
See the numbers year by year
Year
Temp vs average
Days >25°C vs avg
Frost nights vs avg
Wind vs avg
1995
−0.3°C
−3
−1
+1%
1996
−1.1°C
+2
+7
+1%
1997
−0.1°C
+0
+1
+3%
1998
+2.2°C
+7
−26
+3%
1999
+1.1°C
+5
−1
+3%
2000
−0.6°C
+3
+3
−3%
2001
+1.1°C
−5
−4
+3%
2002
−1.2°C
−5
+19
−3%
2003
±0.0°C
+2
−6
−3%
2004
−2.7°C
+6
+25
−1%
2005
+0.5°C
−6
+20
+3%
2006
+2.1°C
−4
−12
−1%
2007
−0.6°C
−1
+7
−1%
2008
−1.1°C
+3
−3
+3%
2009
−0.8°C
−7
+7
−3%
2010
+1.7°C
−2
+1
−1%
2011
−0.3°C
−2
−5
−3%
2012
+0.8°C
−3
−14
+1%
2013
−0.8°C
+1
−3
−3%
2014
−1.1°C
+10
+2
−1%
2015
+0.1°C
−6
−4
+1%
2016
+0.7°C
+1
−6
−1%
2017
+0.8°C
+4
−9
−3%
2018
−0.9°C
−3
+22
+1%
2019
−1.1°C
−5
+4
−3%
2020
−1.3°C
−5
+11
+3%
2021
−0.5°C
+0
+4
+1%
2022
−0.7°C
−3
−9
−1%
2023
+2.4°C
+0
−28
+1%
2024
+0.6°C
+5
−10
+1%
Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Yellowknife, not a weather station, and a square that takes in sea or a large lake runs milder than the city itself. That is why this section shows change against the square's own 30-year average rather than counts you could compare with a local station. Rain and snow are left out because their long-term record in this dataset is not consistent over time. "Within the normal year-to-year swing" means the change is smaller than the usual differences between single years.
Which forecast is most accurate in Yellowknife?
CheckWeather Score, graded against the weather that actually happened
Provider
CheckWeather-score
Temp
Wind
Rain
Run by
European ★ Best
90
/100rank #1
92±0.5°C
98±1.2 km/h
8290% hit
ECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American
81
/100rank #2
88±0.6°C
94±3.0 km/h
6581% hit
NOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
77
/100rank #3
85±0.8°C
92±3.8 km/h
5877% hit
Environment and Climate Change CanadaDorval, Québec, Canada
The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in Canada? Give each 1 to 5 stars.
Env. CanadaGEM model
Loading ratings…
EuropeanECMWF
Loading ratings…
AmericanNOAA GFS
Loading ratings…
One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.
Where the models disagree
temperature and rain, judged separately
Day
Temperature
Rain
Today
±2°-3° to -1°
models agree0% to 0% chance
Tomorrow
±1°2° to 2°
models agree0% to 0% chance
Mon
±1°3° to 3°
models agree0% to 0% chance
Tue
±2°-1° to 0°
±8%3% to 11% chance
Wed
±1°-2° to 0°
±17%3% to 20% chance
The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.
Sunrise and sunset in Yellowknife
today, local time
Sunrise
08:49
Sunset
17:53
Daylight
9h 4m
Common questions
What's the weather in Yellowknife today?
Saturday, October 24: Env. Canada, the European and the American model put Yellowknife's high today between -3° and -1°, a 2° split. Tomorrow: cloudy, around 2°, with a 0% chance of rain. The forecast on this page refreshes live.
Will it rain in Yellowknife today or tomorrow?
Rain looks unlikely in Yellowknife on Sunday, October 25: no model gives more than 0% (Env. Canada 0%, European 0%, American 0%). On Saturday, October 24 the highest chance of rain from any model is 0%. The hourly strip and the model-by-model rain panel above update live.
Which forecast is most accurate for Yellowknife?
Over the last 30 days, the European model has been the most accurate for Yellowknife (CheckWeather Score 90/100), ahead of the American at 81. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Yellowknife?
July is typically the warmest month in Yellowknife, with average highs around 22°C.
How cold does Yellowknife get?
The coldest month in Yellowknife is January, when overnight lows average about -26°C.
How much rain does Yellowknife get?
Yellowknife sees roughly 394 mm of precipitation a year, with July usually the wettest month.
Is Yellowknife getting warmer?
Not clearly. In NASA's reanalysis for the area around Yellowknife, the difference between 1995-2004 and 2015-2024 is 0.2°C, within the normal swing from year to year.
CheckWeather.io on iPhoneFree. No ads, no account.
