S
M
T
W
T
F
S
29
35°
14°
30
44°
27°
31
42°
27°
1
33°
27°
2
33°
24°
3
33°
24°
4
34°
24°
5
50°
24°
6
49°
28°
7
39°
28°
8
34°
22°
9
47°
30°
10
53°
34°
11
48°
32°
12
45°
31°
13
50°
38°
14
47°
32°
15
41°
30°
16
42°
34°
17
45°
30°
18
43°
32°
19
45°
31°
20
47°
34°
21
48°
32°
22
47°
31°
23
47°
31°
24
48°
35°
25
49°
35°
26
49°
34°
27
47°
34°
28
48°
32°
29
48°
32°
30
49°
30°
1
49°
30°
2
50°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Summerside
Summerside's April 2026 forecast shows daily high temperatures ranging from 34° to 53°, with overnight lows between 22° and 38°. The average high for April is 46° with an average low of 32°. 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 Summerside. See also: May | June | July.