Annual mean -3°C · wettest around November · prevailing wind E
Warmest
20.0 °C
Coldest
-24.3 °C
Wettest
14%
Windiest
5.7 m/s
Prevailing
E
4.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Yellowknife over the whole year is -3°C. July is the hottest month, with highs of about 20°C; February is the coldest, with lows of about -26°C. Yellowknife has no sharply defined rainy season: the chance of rain on a given day runs from 4% in April, the driest month, to 10% in November, the wettest. Winds in Yellowknife are highest in May, averaging 4.8 m/s (17 km/h), and lightest in January, at 3.6 m/s (13 km/h). The prevailing wind is from the E. The clearest skies in Yellowknife come in February, when the sky is typically 47% covered; November is the cloudiest month, at 74%.
Month by month Yellowknife climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-22°C
-23°C
-28°C
6%
57%
3.6 m/s
0
0
0
February
-22°C
-26°C
-28°C
6%
47%
3.6 m/s
0
0
0
March
-13°C
-20°C
-19°C
5%
48%
3.8 m/s
0
0
0
April
-3°C
-9°C
-9°C
4%
50%
4.4 m/s
0
0
2
May
10°C
3°C
4°C
5%
54%
4.8 m/s
4
0
37
June
16°C
11°C
12°C
9%
57%
4.5 m/s
38
1
74
July
20°C
14°C
16°C
9%
60%
4.2 m/s
65
4
83
August
18°C
13°C
14°C
10%
59%
4.0 m/s
51
2
83
September
11°C
6°C
6°C
8%
59%
4.3 m/s
7
0
47
October
1°C
-1°C
-4°C
8%
73%
4.3 m/s
0
0
5
November
-11°C
-12°C
-17°C
10%
74%
4.3 m/s
0
0
0
December
-21°C
-21°C
-27°C
6%
61%
3.7 m/s
0
0
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Yellowknife weather by season
Year round, Yellowknife has days of about -22°C at their warmest in February, its coolest month, and 20°C in July, its warmest; the coolest hours of the day run from -26°C to 14°C through the year, and the average temperature over the year is -3°C around the clock. Rain is most likely around November and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Yellowknife weather in winterDecember to February
High -21°CLow -24°CRain 6%
Winter in Yellowknife has typical daily highs of about -21°C and lows of about -24°C, with a 6% chance of rain on a given day.
Yellowknife weather in springMarch to May
High -2°CLow -9°CRain 5%
Spring in Yellowknife has typical daily highs of about -2°C and lows of about -9°C, with a 5% chance of rain on a given day.
Yellowknife weather in summerJune to August
High 18°CLow 12°CRain 9%
Summer in Yellowknife has typical daily highs of about 18°C and lows of about 12°C, with a 9% chance of rain on a given day.
Yellowknife weather in autumnSeptember to November
High 1°CLow -2°CRain 9%
Autumn in Yellowknife has typical daily highs of about 1°C and lows of about -2°C, with a 9% chance of rain on a given day.
When is the rainy season in Yellowknife?
Yellowknife has no sharply defined rainy season: the chance of rain on a given day runs from 4% in April, the driest month, to 10% in November, the wettest.
What time of year is Yellowknife windiest?
Winds in Yellowknife are highest in May, averaging 4.8 m/s (17 km/h), and lightest in January, at 3.6 m/s (13 km/h). The prevailing wind is from the E.
What is the average temperature in Yellowknife year round?
The average temperature in Yellowknife over the whole year is -3°C. July is the hottest month, with highs of about 20°C; February is the coldest, with lows of about -26°C.