S
M
T
W
T
F
S
29
66°
43°
30
58°
47°
31
54°
46°
1
50°
43°
2
52°
39°
3
70°
38°
4
74°
51°
5
70°
51°
6
56°
48°
7
52°
48°
8
65°
47°
9
64°
51°
10
61°
51°
11
54°
46°
12
56°
41°
13
57°
42°
14
54°
37°
15
53°
42°
16
56°
38°
17
66°
46°
18
60°
43°
19
60°
48°
20
58°
49°
21
57°
47°
22
57°
45°
23
61°
45°
24
63°
49°
25
58°
45°
26
54°
47°
27
56°
46°
28
60°
45°
29
59°
47°
30
60°
47°
1
57°
48°
2
57°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Harbor
Harbor's April 2026 forecast shows daily high temperatures ranging from 54° to 63°, with overnight lows between 45° and 49°. The average high for April is 58° with an average low of 46°. 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 Harbor. See also: May | June | July.
