S
M
T
W
T
F
S
29
44°
32°
30
49°
31°
31
54°
37°
1
49°
41°
2
58°
42°
3
54°
43°
4
59°
41°
5
62°
44°
6
62°
40°
7
55°
35°
8
58°
36°
9
62°
42°
10
64°
44°
11
55°
45°
12
57°
44°
13
57°
43°
14
55°
44°
15
55°
40°
16
56°
45°
17
57°
43°
18
57°
43°
19
59°
44°
20
58°
45°
21
60°
43°
22
58°
42°
23
55°
38°
24
54°
38°
25
54°
39°
26
57°
40°
27
59°
40°
28
60°
40°
29
55°
43°
30
55°
45°
1
56°
42°
2
56°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Friday Harbor
Friday Harbor's April 2026 forecast shows daily high temperatures ranging from 54° to 64°, with overnight lows between 38° and 46°. The average high for April is 57° 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 Friday Harbor. See also: May | June | July.
