S
M
T
W
T
F
S
29
45°
20°
30
69°
35°
31
50°
37°
1
54°
37°
2
40°
34°
3
49°
35°
4
54°
37°
5
47°
37°
6
48°
29°
7
37°
24°
8
43°
24°
9
48°
25°
10
56°
37°
11
55°
36°
12
51°
31°
13
63°
40°
14
68°
47°
15
63°
46°
16
52°
47°
17
60°
48°
18
50°
44°
19
53°
35°
20
43°
25°
21
47°
36°
22
49°
36°
23
51°
37°
24
51°
36°
25
54°
39°
26
54°
42°
27
53°
40°
28
56°
39°
29
53°
43°
30
54°
42°
1
54°
44°
2
55°
43°
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 43° to 63°, with overnight lows between 25° and 48°. The average high for April is 53° with an average low of 40°. 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.
