S
M
T
W
T
F
S
26
64°
53°
27
64°
52°
28
63°
55°
29
62°
55°
30
63°
54°
31
65°
53°
1
60°
50°
2
59°
52°
3
59°
52°
4
60°
53°
5
61°
52°
6
60°
52°
7
63°
51°
8
63°
55°
9
61°
53°
10
60°
54°
11
59°
52°
12
59°
51°
13
60°
52°
14
59°
52°
15
60°
52°
16
65°
53°
17
64°
53°
18
59°
51°
19
Hist. Avg.
62°
52°
20
Hist. Avg.
62°
52°
21
Hist. Avg.
62°
52°
22
Hist. Avg.
62°
52°
23
Hist. Avg.
62°
52°
24
Hist. Avg.
62°
52°
25
Hist. Avg.
62°
52°
26
Hist. Avg.
62°
52°
27
Hist. Avg.
61°
51°
28
Hist. Avg.
61°
51°
29
Hist. Avg.
61°
51°
30
Hist. Avg.
61°
51°
31
Hist. Avg.
61°
51°
1
Hist. Avg.
61°
51°
2
Hist. Avg.
61°
50°
3
Hist. Avg.
60°
50°
4
Hist. Avg.
60°
50°
5
Hist. Avg.
60°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Sitka
Sitka's August 2026 forecast shows daily high temperatures ranging from 59° to 65°, with overnight lows between 50° and 55°. The average high for August is 61° with an average low of 53°. 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 Sitka. See also: September | October | November.