S
M
T
W
T
F
S
26
64°
43°
27
59°
46°
28
71°
50°
29
76°
50°
30
71°
49°
31
74°
50°
1
71°
55°
2
64°
49°
3
68°
42°
4
69°
56°
5
58°
51°
6
62°
53°
7
68°
54°
8
70°
56°
9
73°
55°
10
76°
53°
11
68°
53°
12
69°
55°
13
73°
50°
14
74°
51°
15
60°
48°
16
62°
47°
17
63°
44°
18
71°
55°
19
73°
56°
20
62°
43°
21
69°
43°
22
67°
55°
23
76°
58°
24
59°
53°
25
67°
51°
26
74°
52°
27
77°
59°
28
64°
58°
29
61°
52°
30
58°
49°
31
62°
42°
1
69°
51°
2
72°
53°
3
68°
53°
4
57°
42°
5
57°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Yellowknife
Yellowknife's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Yellowknife. See also: September | October | November.