S
M
T
W
T
F
S
26
63°
55°
27
62°
54°
28
63°
51°
29
63°
52°
30
64°
53°
31
67°
53°
1
69°
56°
2
68°
55°
3
Hist. Avg.
65°
53°
4
Hist. Avg.
65°
53°
5
Hist. Avg.
65°
53°
6
Hist. Avg.
65°
53°
7
Hist. Avg.
65°
53°
8
Hist. Avg.
65°
53°
9
Hist. Avg.
65°
53°
10
Hist. Avg.
65°
53°
11
Hist. Avg.
65°
53°
12
Hist. Avg.
65°
53°
13
Hist. Avg.
65°
52°
14
Hist. Avg.
65°
52°
15
Hist. Avg.
65°
52°
16
Hist. Avg.
64°
52°
17
Hist. Avg.
64°
52°
18
Hist. Avg.
64°
52°
19
Hist. Avg.
64°
52°
20
Hist. Avg.
64°
52°
21
Hist. Avg.
64°
51°
22
Hist. Avg.
64°
51°
23
Hist. Avg.
63°
51°
24
Hist. Avg.
63°
51°
25
Hist. Avg.
63°
51°
26
Hist. Avg.
63°
50°
27
Hist. Avg.
63°
50°
28
Hist. Avg.
62°
50°
29
Hist. Avg.
62°
50°
30
Hist. Avg.
62°
50°
31
Hist. Avg.
62°
50°
1
Hist. Avg.
62°
49°
2
Hist. Avg.
62°
49°
3
Hist. Avg.
61°
49°
4
Hist. Avg.
61°
49°
5
Hist. Avg.
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Ketchikan
Ketchikan's August 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 51° and 56°. The average high for August is 65° with an average low of 54°. 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 Ketchikan. See also: September | October | November.
