S
M
T
W
T
F
S
29
54°
41°
30
60°
36°
31
60°
44°
1
54°
42°
2
58°
39°
3
64°
36°
4
77°
37°
5
81°
46°
6
79°
47°
7
64°
41°
8
71°
37°
9
79°
39°
10
74°
52°
11
65°
48°
12
55°
49°
13
58°
46°
14
51°
43°
15
51°
38°
16
57°
36°
17
62°
41°
18
75°
38°
19
78°
48°
20
70°
53°
21
58°
49°
22
52°
43°
23
60°
42°
24
68°
45°
25
66°
43°
26
62°
45°
27
64°
45°
28
68°
45°
29
67°
46°
30
63°
48°
1
65°
47°
2
61°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in South Portland
South Portland's April 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 42° and 48°. The average high for April is 63° with an average low of 45°. 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 South Portland. See also: May | June | July.
