S
M
T
W
T
F
S
26
64°
37°
27
67°
45°
28
67°
42°
29
62°
51°
30
72°
48°
31
68°
48°
1
72°
47°
2
77°
48°
3
75°
49°
4
71°
47°
5
78°
45°
6
82°
49°
7
75°
51°
8
72°
49°
9
70°
48°
10
70°
49°
11
72°
49°
12
74°
48°
13
76°
49°
14
76°
51°
15
76°
52°
16
73°
51°
17
68°
48°
18
67°
49°
19
67°
47°
20
69°
51°
21
68°
49°
22
66°
48°
23
65°
49°
24
59°
39°
25
58°
39°
26
57°
40°
27
59°
40°
28
63°
45°
29
57°
41°
30
57°
40°
31
59°
42°
1
58°
39°
2
55°
40°
3
56°
43°
4
57°
43°
5
54°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Whitehorse
Whitehorse's August 2026 forecast shows daily high temperatures ranging from 54° to 76°, with overnight lows between 39° and 52°. The average high for August is 64° with an average low of 45°. 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 Whitehorse. See also: September | October | November.