S
M
T
W
T
F
S
26
63°
42°
27
63°
42°
28
64°
44°
29
63°
43°
30
64°
43°
31
66°
44°
1
62°
46°
2
63°
43°
3
64°
44°
4
63°
46°
5
65°
47°
6
63°
45°
7
63°
41°
8
63°
40°
9
65°
42°
10
71°
43°
11
72°
45°
12
71°
48°
13
71°
44°
14
70°
47°
15
69°
43°
16
62°
40°
17
60°
40°
18
62°
41°
19
67°
42°
20
64°
41°
21
61°
45°
22
63°
44°
23
59°
38°
24
59°
38°
25
58°
38°
26
58°
38°
27
57°
41°
28
57°
44°
29
58°
42°
30
57°
43°
31
56°
35°
1
57°
36°
2
62°
41°
3
63°
45°
4
61°
42°
5
60°
38°
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 56° to 72°, with overnight lows between 35° and 48°. The average high for August is 63° with an average low of 42°. 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.