Measurements:
°C
°F
CURRENT WEATHER
15:31
Yellowknife
60°F
N 8 mph
Feels like: 60°F
Precip: 12%
World Resorts Canada Yellowknife Weather

7 Day Weather Forecast

09.08
tue
DAY
56°F
N 2 mph
precip
15%
NIGHT
54°F
W 15 mph
precip
20%
09.09
wed
DAY
58°F
N 8 mph
precip
17%
NIGHT
50°F
S 17 mph
precip
52%
09.10
thu
DAY
52°F
S 20 mph
precip
18%
NIGHT
46°F
S 19 mph
precip
18%
09.11
fri
DAY
44°F
SE 16 mph
precip
20%
NIGHT
42°F
E 6 mph
precip
17%
09.12
sat
DAY
46°F
E 7 mph
precip
28%
NIGHT
48°F
SE 9 mph
precip
32%
09.13
sun
DAY
54°F
E 9 mph
precip
4%
NIGHT
50°F
S 7 mph
precip
16%
09.14
mon
DAY
40°F
S 22 mph
precip
13%
NIGHT
32°F
SE 14 mph
precip
12%

Yellowknife Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Yellowknife was 14.1°F. The maximum and minimum values were 11.7°F and 17.4°F respectively.

Yellowknife on the Weather Map

Best Time to Visit Yellowknife
The most sunny months:
June 14 days
July 14 days
August 11 days
The most warm months:
July 69.4 °F
August 65.5 °F
June 62.1 °F
Warmest sea temperature:
August 60.5 °F
July 59.3 °F
September 55.0 °F
The most cold months:
January -15.3 °F
February -15.0 °F
December -13.2 °F
The most rainy months:
June 1 day
July 1 day
August 1 day
The most windy months:
October 10 mph
May 9 mph
September 9 mph
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