S
M
T
W
T
F
S
29
39°
21°
30
50°
34°
31
43°
35°
1
50°
33°
2
38°
29°
3
41°
32°
4
47°
35°
5
44°
35°
6
45°
31°
7
40°
28°
8
42°
26°
9
45°
26°
10
50°
38°
11
51°
34°
12
54°
32°
13
47°
38°
14
63°
39°
15
56°
44°
16
47°
41°
17
67°
42°
18
53°
40°
19
46°
36°
20
47°
29°
21
43°
23°
22
43°
24°
23
46°
35°
24
44°
32°
25
52°
38°
26
53°
34°
27
53°
37°
28
58°
40°
29
52°
42°
30
53°
42°
1
52°
41°
2
54°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Seal Harbor
Seal Harbor's April 2026 forecast shows daily high temperatures ranging from 44° to 58°, with overnight lows between 32° and 43°. The average high for April is 52° with an average low of 38°. 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 Seal Harbor. See also: May | June | July.
