S
M
T
W
T
F
S
29
41°
26°
30
36°
27°
31
43°
31°
1
48°
29°
2
43°
30°
3
44°
38°
4
44°
39°
5
44°
40°
6
44°
35°
7
47°
34°
8
50°
33°
9
47°
39°
10
49°
40°
11
56°
40°
12
54°
36°
13
42°
33°
14
42°
30°
15
52°
33°
16
46°
40°
17
45°
40°
18
48°
41°
19
53°
42°
20
53°
41°
21
51°
37°
22
54°
40°
23
60°
44°
24
58°
42°
25
59°
42°
26
58°
42°
27
55°
41°
28
56°
41°
29
56°
44°
30
52°
42°
1
54°
43°
2
58°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Ketchikan
Ketchikan's April 2026 forecast shows daily high temperatures ranging from 52° to 59°, with overnight lows between 41° and 45°. The average high for April is 56° 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 April weather will actually feel in Ketchikan. See also: May | June | July.