S
M
T
W
T
F
S
29
80°
52°
30
82°
59°
31
84°
63°
1
84°
65°
2
83°
72°
3
84°
72°
4
83°
70°
5
73°
54°
6
74°
49°
7
77°
56°
8
77°
62°
9
78°
63°
10
77°
66°
11
79°
66°
12
81°
67°
13
84°
69°
14
84°
67°
15
85°
66°
16
86°
64°
17
84°
67°
18
85°
62°
19
81°
63°
20
81°
65°
21
82°
65°
22
81°
64°
23
82°
64°
24
82°
66°
25
81°
66°
26
82°
65°
27
82°
66°
28
83°
66°
29
81°
65°
30
79°
66°
1
82°
66°
2
81°
66°
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 73° to 86°, with overnight lows between 49° and 69°. The average high for April is 81° with an average low of 64°. 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.